source string | id string | question string | options list | answer string | reasoning string |
|---|---|---|---|---|---|
OpenBookQA | OpenBookQA-3401 | zoology, hybridization, artificial-selection, feline
To answer your question about felinae and panthera first, several panthera genomes have been sequenced, and (see here) the tiger for instance has only 95.6% similarity with the domestic cat and diverged 10.8 MYA. For comparison, human and gorilla have 94.8% similari... | [
"rock music",
"jeans",
"magic",
"genes"
] | D | genes are a vehicle for passing inherited characteristics from parent to offspring |
OpenBookQA | OpenBookQA-3402 | paleontology, fossils, desert
Title: Why are many fossils found in deserts? Why are deserts famous for fossils? Is it a coincidence? Some examples:
Giant Catfish Fossil Found in Egyptian Desert
Chile's stunning fossil whale graveyard explained
Giant Dinosaur Fossil Found in Sahara Desert I would contend that the fact ... | [
"rubber duck",
"tin can",
"shoe",
"murdered organism"
] | D | An example of a fossil is the bones of an extinct animal |
OpenBookQA | OpenBookQA-3403 | thermodynamics, energy, temperature
The higher the temperature of the room, the quicker it cools too, so typically, I would think leaving the oven closed would be beneficial in the long term. You're keeping the heat around for longer.
One (potentially) good thing about opening the oven door is that it directs more of... | [
"a cold counter",
"a wooden stool",
"a window sill",
"a vehicle engine"
] | D | a car engine is a source of heat |
OpenBookQA | OpenBookQA-3404 | problems, recomputations of same subproblems can be avoided by constructing a temporary array val[] in bottom up manner. That is we know the price for rods of length from 1 to n, considering the length of the rod was n. One thing to notice here is that the price for the rod of different lengths is not equally distribut... | [
"plastic cup",
"metal rod",
"gold trophy",
"yellow pencil"
] | D | An example of recycling is using an object to make a new object |
OpenBookQA | OpenBookQA-3405 | homework-and-exercises, newtonian-mechanics, energy, work
Title: Work-Energy conservation with friction I didn't go to the lesson of work-energy theorem, so I miss something about this subject. I know the formulas, but I can't figure it out. This question has many quantities.
Here is the problem,
The sled ($m = 11.1\... | [
"fly off",
"turn sideways",
"to heat up",
"cooling down"
] | C | as the roughness of something increases , the friction of that something will increase when its surface moves against another surface |
OpenBookQA | OpenBookQA-3406 | Shanonhaliwell April 8th, 2018 03:31 PM
Quote:
Originally Posted by romsek (Post 591335) outstanding, you seem to be getting the hang of things.
Thanks to you, I was able to do it.
All times are GMT -8. The time now is 12:30 AM.
The following is multiple choice question (with options) to answer.
On December 3rd af... | [
"Time Travel",
"Magic",
"My feelings",
"sunglasses"
] | D | when the seasons change from the summer to the fall , the amount of daylight will decrease |
OpenBookQA | OpenBookQA-3407 | So total kinetic energy = $$\frac 12 mv^2+\dfrac {k^2}{r^2}\frac 12 m v^2$$
If the moment of inertial gets small $$k$$ gets smaller and so the proportion of rotational kinetic energy decreases whilst the proportion of rotational energy incraeses.
• "whilst the proportion of rotational energy increases". Did you mean ... | [
"sitting still",
"wrapped up",
"sliding sideways",
"being frozen"
] | C | motion is a source of kinetic energy in an object |
OpenBookQA | OpenBookQA-3408 | astronomy, everyday-life, popular-science, climate-science
Title: Why is the summer, in the temperate latitudes, in average, hotter that the spring? It is common knowledge that the transition from the Spring to the Summer season occurs in the Summer Solstice when the "Sun reaches its highest excursion relative to the ... | [
"winter is coming",
"our globe shifts",
"summer is here",
"snakes hibernate"
] | B | Earth 's tilt on its axis causes seasons to occur |
OpenBookQA | OpenBookQA-3409 | thermodynamics, heat, microwaves
Title: Microwave oven heating time It's logical to think that the time it takes a microwave to heat the food would be proportional to the mass heated. But since a microwave is based on dielectric heating, I think that if you increase the mass of food there will be more water, which wil... | [
"stay the same",
"escalate in temperature",
"decrease in temperature",
"Die"
] | B | moving an object from a cool place to a warm place causes the object 's temperature to increase |
OpenBookQA | OpenBookQA-3410 | physiology, homework
Title: Order of events in hibernation
Arrange this in sequence :
i. Heat loss exceeds heat production.
ii.As body temperature falls, heat loss decreases.
iii.Body temperature equals environmental temperature.
iv.Metabolic activities fall to the basal level.
I am confused between i,iii,ii,iv and ... | [
"soup",
"their pants",
"Their parents",
"porridge"
] | C | hibernation is an inherited behavior |
OpenBookQA | OpenBookQA-3411 | species-identification, zoology, bone-biology, bone
Title: What is this bone from? This object showed up on my fire escape in New York city. It appears to be some kind of bone. It's a bit smaller than an adult human hand. What animal is it from? Given the size and thin/elongated ilia as well as the urban location, I t... | [
"water",
"sky",
"air",
"hard stones"
] | D | An example of a fossil is a paw print in rock |
OpenBookQA | OpenBookQA-3412 | electromagnetic-radiation, visible-light, experimental-physics
Title: Experiment Prediction: How much light can pass through an opening? The flow of current through a wire is limited to the size of the wire. Water through a pipe is limited by the size of the pipe. What about light? Is it limited in a similar way?
Let'... | [
"the taste of food",
"the sound of silence",
"the smell of tree",
"any kind of tangible object"
] | D | when light enters the eye through the pupil , that light falls on the retina |
OpenBookQA | OpenBookQA-3413 | geophysics, sedimentology, glaciology, topography, isostasy
Are there any other reasons? What are the relative proportions in magnitude of these factors? Forming of coastline
During the last ice age, the North Sea was dry. When the ice melted sea levels slowly started to rise again and due to tides and currents
a barr... | [
"a cat ran off with it",
"a dog carried it away in its mouth",
"someone cast a magic spell on it",
"very strong eddies of fast moving air carried it away over time"
] | D | wind carries sand from one place to another place |
OpenBookQA | OpenBookQA-3414 | fusion
Title: Where does the energy produced by fusion come from? Fission, in layman's (or "initiate's") terms, is easy enough to understand; a large atom with a lot of protons and neutrons requires a large amount of force provided by the strong interaction to overcome electromagnetism and keep the nucleus together. T... | [
"darkness",
"frigged rain",
"illumination",
"groceries"
] | C | nuclear reactions in stars causes stars to produce light |
OpenBookQA | OpenBookQA-3415 | solutions
Deep into fantasy
So if you think the molecules as humans exiting from an elevator, humans A are more claustrophobic and so tend to exit more rapidly than humans B when the doors open. If they interact positively with humans B they will keep calm when exiting. If humans B don't find funny humans A they prese... | [
"meteors",
"lodgepole pines",
"snow monkeys",
"advanced robots"
] | C | animals usually distance themselves from humans |
OpenBookQA | OpenBookQA-3416 | thermodynamics, experimental-physics, home-experiment, popular-science
This is only a partial answer - I have no idea whether my "method" is the fastest.
Heat transfer can be done in three ways: convection, conduction and radiation. We cannot really influence radiation, but it doesn't help much anyway (the temperature... | [
"rice",
"water",
"fairies",
"curds"
] | D | cooking causes a chemical reaction |
OpenBookQA | OpenBookQA-3417 | atomic-physics, geophysics, explosions
Title: In atomic bomb tests under ground, where does the displaced volume of the rocks go? Underground atomic bomb tests are done in a deep, sealed hole. Not all underground tests eject material on the surface. In this case, they are only noticeable as earthquakes, according to ... | [
"scratched, fractured or otherwise deformed",
"transformed into different minerals",
"melted and otherwise liquified",
"scratched with ice breakers"
] | A | heat and pressure change the remains of prehistoric living things into natural gas |
OpenBookQA | OpenBookQA-3418 | hygiene, food-chemistry
Dishes and utensils are only susceptible to bacterial growth if there's traces of food on them. Washing is meant to remove traces of food and oil so bacteria can't multiple on them. The conditions must be right for bacteria to multiple. If traces of food were to be completely dry and hardened o... | [
"float",
"Fly",
"grow a beak",
"get an ailment"
] | D | microorganisms cause food to spoil |
OpenBookQA | OpenBookQA-3419 | earth, rotation, temperature
Title: What contributes the most to the seasonal temperature variation? The seasonal temperature is ultimately due to the precession of the Earth around the axis. But what I'm curious about is... is it due more to the side experiencing winter being farther from the sun or is it more due to... | [
"correlate to warm sunny days in the Southern Hemisphere",
"are in sync with weather in the Southern Hemisphere",
"led to brisk fall days in the Northern Hemisphere",
"correlate to cold months in the Southern Hemisphere"
] | A | June is during the winter in the southern hemisphere |
OpenBookQA | OpenBookQA-3420 | zoology, ecology, species-distribution, migration
Title: How do animals end up in remote areas? I was thinking specifically about random marshy water holes on farmers fields. It seems that you can visit just about any one of these and you will find frogs if you look hard enough.
They usually don't seem to be connected... | [
"plant charts",
"sky",
"space",
"parent flora"
] | D | seed dispersal is when the seeds of a plant are moved from the plant to a new environment |
OpenBookQA | OpenBookQA-3421 | energy, electricity, potential, electric-fields
Title: Tubelights+power lines pictures? I've come across many pictures like these, sometimes in chain emails reporting the dangers of power lines.
Another claim is that they run on "wasted" energy.
The explanations given are that the wires set up a field, and thus a pot... | [
"a balloon",
"a string",
"a soda can",
"an iPhone"
] | D | a closed circuit has continuous path |
OpenBookQA | OpenBookQA-3422 | civil-engineering, building-design
Title: Is it OK for a 2 story house not have a column or pillar sorry for my english. I was looking to buy a house. I saw some in my hometown, which is very affordable.
but on a picture of the house they are selling I found on the net troubled me.
no pillar/column, just hollowblocks ... | [
"ceramic",
"branches",
"Styrofoam",
"tile"
] | B | if something is a raw material then that something comes directly from a source |
OpenBookQA | OpenBookQA-3423 | planet, ceres
Title: Subterranean Oceans On Other Planets/Planetoids: How Do Astronomers Deduce This Recently I have been looking into planetoids in our asteroid belt and I have found one that caught my interest, Ceres. One of the main points that was said about it was that it had a subterranean ocean. But I'm puzzled... | [
"eyes for seeing things",
"wings for flying around",
"limbs for walking upright",
"special parts for underwater respiration"
] | D | gills are used for breathing water by aquatic animals |
OpenBookQA | OpenBookQA-3424 | optics, visible-light, quantum-electrodynamics, reflection
Title: Is the glass made up of holes that let the light to go through it? The following passage has been extracted from the book "The Magic of Science-A.Frederick Collins" (1917):
Substances of all kinds
have pores or holes in them. A sponge has pores tha... | [
"wood",
"water",
"air",
"glass"
] | A | no light shines through an opaque object |
OpenBookQA | OpenBookQA-3425 | entomology
Title: The death of Earthworm In rainy season when children sprinkle salt on earthworm ,it dies.But salt is not dangerous.We use it daily.Then why earthworm dies? It's because on the earth worm skin's special mucous. Acording to this article: Why do earthworms die when salt is sprinkled on them? the mucous ... | [
"Worms are glad their rivals have died off before them",
"The dirt is cleaner than ever",
"Monkeys can find more bananas",
"Flying creatures have more trouble finding food"
] | D | loss of resources has a negative impact on the organisms in an area |
OpenBookQA | OpenBookQA-3426 | electrical-engineering, measurements, safety, photovoltaics
This has to be done ideally asap, but definitely before the end of May. Although, again, my main concern is doing this safely first and foremost. I am willing to hold off on measuring the power as long as there's as the primary concern is discharging power sa... | [
"a garden gnome",
"a rock",
"the sun",
"a hairdryer"
] | D | when an electrical conductor is plugged into an outlet , a circuit is completed |
OpenBookQA | OpenBookQA-3427 | geology, mineralogy, minerals, weathering
To me, supergene has a specific meaning, it may be part of the weathering process in some locations, but weathering involves the breaking down of rocks due to: reactions with atmospheric gasses, water (usually rain), changes brought on by plants, bacteria wind and temperature.... | [
"talking to a friend",
"running on a hot day",
"cleaning my room on Saturday",
"changing a statue to dust"
] | D | An example of weathering is when a plant root grows into a crack in rock |
OpenBookQA | OpenBookQA-3428 | thermodynamics, heat, microwaves
Title: Microwave oven heating time It's logical to think that the time it takes a microwave to heat the food would be proportional to the mass heated. But since a microwave is based on dielectric heating, I think that if you increase the mass of food there will be more water, which wil... | [
"heaviness",
"drought",
"starvation",
"sunlight"
] | A | as the amount of food an animal eats increases , the weight of that animal will increase |
OpenBookQA | OpenBookQA-3429 | pathology
Title: Are all diseases caused by organisms (microorganisms)? Are there other causes? Or is it correct to say that all diseases are in fact caused by organisms (microorganisms)? It is not correct to say that all diseases are caused by foreign organisms. Counterexamples are:
Cancer is caused by random geneti... | [
"population increase",
"change in appearance",
"population decrease",
"nothing"
] | C | as population of predators decreases , the population of prey will increase in an environment |
OpenBookQA | OpenBookQA-3430 | forces, friction
Title: How does static friction increase with increase in the applied force? My book says that 'Between surface of contact between two bodies there are contact forces applied between each other (they are equal in magnitude but opposite in direction,obeying Newton's 3rd law) due to electromagnetic inte... | [
"smooth",
"shiny",
"rutted",
"clean"
] | C | as roughness of a surface increases , friction will increase |
OpenBookQA | OpenBookQA-3431 | genetics, dna, chromosome, biotechnology, allele
Title: Do we come to know which allele is dominant by seeing family genration tree only? I know that a Gene has Alleles (variation) and one is Dominant over Other i.e the Other Recessive.
Then I got a Thought that How can we tell whether an Allele is Dominant or Recessi... | [
"society",
"feature",
"person",
"path"
] | B | when both a dominant and recessive gene are present , the dominant trait will be visible |
OpenBookQA | OpenBookQA-3432 | geophysics, sedimentology
Title: Does dirt compact itself over time? If so, how does this happen? If I were to bury something 10 feet (~3 metres) underground, with loose soil on top, would the ground naturally compact itself over time, until whatever I had buried has dirt tightly pressing against it on all sides?
What... | [
"be solidified in stone",
"be frozen in carbonate",
"be melted to a tree",
"become a source of water"
] | A | fossils are formed when layers of sediment cover the remains of organisms over time |
OpenBookQA | OpenBookQA-3433 | water, atmospheric-science, molecules, humidity
Commentary 3: Physics explanation based on molecule movement will be greatly appreciated. While you are at it - I have a hypothesis why humidity of the atmosphere is seldom 100 %. Water molecules are lighter than nitrogen (or average air) molecules and thus water vapour ... | [
"when you get closer",
"when you are shooting",
"when you get farther",
"when you are laughing"
] | A | as distance from water decreases , humidity will increase |
OpenBookQA | OpenBookQA-3434 | thermodynamics, food
Title: Boiling Pasta resulting in a Torus like shape? I noticed when I was boiling pasta the other day that the pasta uniformly spread out and formed a donut like torus. Why does this happen? Does it have to do with the shape of the pot? I tried to take a picture when it was boiling, but steam got... | [
"rubber tire",
"copper burner",
"wooden crate",
"plastic legos"
] | B | thermal conduction is when materials conduct heat through those materials |
OpenBookQA | OpenBookQA-3435 | entomology, parasitology, parasitism
The male (microgametocytes) and female (macrogametocytes) gametocytes are ingested by a female Anopheles mosquito during a blood meal (8) - only female mosquitoes (of pretty much any species) drink blood. The parasites' multiplication in the mosquito is known as the sporogonic cycl... | [
"eat every kind of poison on the planet",
"hold their breath for longer underwater",
"post low quality content on the internet",
"time travel to the future"
] | B | living in an environment causes an organism to adapt to that environment |
OpenBookQA | OpenBookQA-3436 | javascript, jquery
Or if you don't care about index error checking (which in actual practice appears to not matter):
var arrangeLayers = function (e, direction) {
var $target = $(e);
var $targetBuddy = $target.prev();
if (direction === 'down') {
$target.insertBefore($targetBuddy.prev().prev())... | [
"seared",
"invisible",
"wet",
"transported"
] | D | moving changes position |
OpenBookQA | OpenBookQA-3437 | organic-chemistry, biochemistry
But what happens with badly ventilated heaters is not that. Leakage of CO into the room is the dominant problem not a lack of oxygen. CO is very poisonous because it forms a relatively stable compound with haemoglobin, blocking the blood's ability to move oxygen around the body. This ha... | [
"tailoring old clothing items",
"using a plastic bottle to create a self water for a plant",
"placing plastic into big lakes",
"using old T-shirts to make a blanket"
] | C | polluting means something poisonous is added to an environment causing harm to the environment |
OpenBookQA | OpenBookQA-3438 | release energy by transferring heat to their surroundings. In older works, power is sometimes called activity. the bungee cord has more potential energy when it is stretched out than when it is slack. , green plants convert solar energy to chemical energy (commonly of oxygen) by the process of photosynthesis. Practice ... | [
"soda bottles",
"drool",
"cascading style sheets",
"cattle prods"
] | D | batteries convert chemical energy to electrical energy |
OpenBookQA | OpenBookQA-3439 | climate-change, geography, rivers, rainfall, agriculture
Today Climate change and its consequences are some of the biggest challenges facing Humanity, with water scarcity being the big factor in Sub-Sahara Africa.
By Ultimately raising the Rainfall in the entire Southern Africa, through the managed and controlled fill... | [
"start increasing in population",
"have more food available",
"have less to drink",
"start becoming more friendly"
] | C | as dryness increases in an environment , the available water in that environment will decrease |
OpenBookQA | OpenBookQA-3440 | the-moon, moon-phases
Title: Red cresent moon Yesterday night i witnessed something very strange when i looked outside the window. I saw the moon (crescent) but it was dull red and right on the horizon ,which is strange considering that it is usually on the upper right of the night sky and white in colour. On further ... | [
"mars",
"astral night light",
"earth",
"sun"
] | B | the phases of the Moon change the appearance of the Moon |
OpenBookQA | OpenBookQA-3441 | = ",Count[Drop[branches,gen],_Real,\[Infinity]]/4" "" ""Length = ",SetAccuracy[Count[Drop[branches,gen],_Real,\[Infinity]]/4*(Norm[{{pt1[[1]],0.5},{0,0}}]^gen),3]}],18],Gray],{2.3,-1.8}]},{Inset[Style[Text@TraditionalForm@Style[Row[{"Polynomial Trees by Bernat Espigulé"}],18],Gray, Opacity[0.4]],{2.3,-2}]}},P... | [
"happiness",
"thriving",
"money",
"magic"
] | B | as the amount of available water decreases , tree-growth rings will become narrower |
OpenBookQA | OpenBookQA-3442 | planet, orbit
Title: Do the orbits of planets change sometimes? Do planets sometimes wobble and get off their paths? What if an asteroid were to hit it? Yes, the orbits change massively over time. For example, Earth's eccentricity (how close to a circle the orbit is), its axial tilt (what causes seasons), and precess... | [
"pluto",
"plasma star",
"venus",
"mercury"
] | B | a line graph is used for showing change over time |
OpenBookQA | OpenBookQA-3443 | thermodynamics, entropy, evaporation
Title: Does $dS = \frac{dQ}{T}$ explain why evaporation increases total entropy? When a cup of water evaporates into air, water molecules collide near the water-air surface in such a way that enables one of the water molecules to escape the water surface. In each such collision, a ... | [
"hotness",
"sound",
"cold",
"kinetic"
] | A | the sun causes water to evaporate more quickly by adding heat |
OpenBookQA | OpenBookQA-3444 | earthquakes, seismology
Title: Do planetary alignments affect Earth's seismic activity? There is a widely circulated tweet by Frank Hoogerbeets where it seems he has predicted Turkey's earthquake a few days before. The tweet says:
Sooner or later there will be a ~M 7.5 #earthquake in this region (South-Central Turkey... | [
"everything was fine",
"stars went out",
"sunrise was delayed",
"shingles caved in"
] | D | buildings collapsing often cause death |
OpenBookQA | OpenBookQA-3445 | javascript, performance, beginner, game, canvas
// Following code is a fix for [[obj1, obj3], [obj2, obj4]].
if (alreadyHadCollisions && (index1 > -1 || index2 > -1)) {
for (i4 = 0; i4 < this.collisions[collisionIndex].length; ++i4) {
... | [
"formation",
"biology",
"chemical composition",
"nutrition"
] | A | the composition of something can be used to identify that something |
OpenBookQA | OpenBookQA-3446 | fluid-dynamics, water, surface-tension
Title: Fluidity: Convex or level So I'm debunking a flat Earth article here and I came across a false proof stating that "If the Earth was round, fluids such as water would have a convex surface that matches the roundness of the earth."
Now, I'm going to go against my common sen... | [
"oceans will evaporate more liquid than a lake",
"streams will evaporate more liquid than anything",
"lakes will evaporate more water than oceans",
"streams will evaporate more water than oceans"
] | A | as the surface area of a body of water increases , evaporation of that body of water will increase |
OpenBookQA | OpenBookQA-3447 | newtonian-mechanics, estimation
Would the rock have created a seismic event of its own (if so, how large)?
Would the rock have created a crater? The energy of the rock at the time of hitting the earth is mgh.
No rock we know of is going to be able to survive this collision with out breaking into pieces.
Non the less i... | [
"terra",
"canoes",
"flowers",
"trees"
] | A | an earthquake changes Earth 's surface quickly |
OpenBookQA | OpenBookQA-3448 | meteorology, severe-weather
The lack of rich low-level moisture is due in large part to the lack of accessibility from warmer moisture sources, particularly the Gulf of Mexico; the Rockies provide a barrier to much of the moisture reaching further west.
As you note, parts of Wyoming and Montana do see supercells and t... | [
"sand count",
"cacti",
"dryness",
"wet sky falling"
] | D | a desert environment has low rainfall |
OpenBookQA | OpenBookQA-3449 | human-biology, red-blood-cell
Title: How do people who have lost both of their legs produce red blood cells? As far as I know, just leg bones produce red blood cells. So, how people who lost their both legs produce red blood cells? Red blood cells are produced in the red marrow which...
"is found mainly in the flat b... | [
"breathing boxes",
"magic",
"oranges",
"time traveling"
] | A | a living thing is made of cells |
OpenBookQA | OpenBookQA-3450 | evolution, species
Title: Parents that eat their own children I am told that there are some species, like fish or rabbits, that if let, will eat their own children. If this is true, how does a species like this exist? Shouldn't the fact that they kill their own lineage make them nonviable? Yes, it is true.
Prairie dog... | [
"common house fly",
"Amur leopard",
"fish",
"cockroach"
] | B | endangered means low in population |
OpenBookQA | OpenBookQA-3451 | zoology, ornithology, ethology, behaviour
Title: Crow branch pecking behaviour I was walking through a small park when two crows started cawing at me, and followed me, flying from tree-to-tree as I walked. I speculate that this is a territorial or protective behaviour, but what I found different was the crows were vio... | [
"a raven",
"a bear",
"a chipmunk",
"a snake"
] | A | migration is an instinctive behavior |
OpenBookQA | OpenBookQA-3452 | javascript, jquery
// If the country appears just once, then we can do this:
(dataByYear[year] = dataByYear[year] || []).push(group.key);
// If the country can appear more than once, we guard the push:
dataByYear[year] = dataByYear[year] || [];
if(!~dataByYear[year].indexOf(group.key)) dataByYear.push... | [
"planes departing",
"cats purring",
"geese travelling",
"rats flying"
] | C | migration is when animals move to different locations in an annual cycle |
OpenBookQA | OpenBookQA-3453 | atmosphere, ocean, hydrology, climate-change
Comment: I strongly endorse the use of wind and hydropower as sources of energy over the further use of fossil fuels. However, I still think it is important to do research into the actual renewability of presumed-renewable energy sources, as we don't want to end up with ano... | [
"the closest planet to earth",
"the closest yellow dwarf star",
"the seven different oceans",
"various gas powered engines"
] | B | the sun is the source of energy for physical cycles on Earth |
OpenBookQA | OpenBookQA-3454 | “It’s amazing, given the billions of hours humans spend in the water, how uncommon attacks are,” Burgess said, “but that doesn’t make you feel better if you’re one of them.” (Source here.)
18.9% of NC visitors went to the beach (source) . In 2012, there were approximately 45.4 million visitors to NC (source). To ov... | [
"our sun",
"luna",
"our trees",
"our skies"
] | B | the gravitational pull of the Moon on Earth 's oceans causes the tides |
OpenBookQA | OpenBookQA-3455 | ecology
Title: Statement about Tropical Rainforests I made a statement about tropical rainforests, and I want to know if it's somewhat true or not:
The soil in tropical rainforests is not exceptionally fertile, because it contains few minerals. The reason that a tropical rainforest has a huge amount of vegetation is b... | [
"the soil is angry",
"the soil has been taken over by dogs",
"the gods are angry",
"there has been too much cultivation"
] | D | farming cause nutrients in the soil to decrease |
OpenBookQA | OpenBookQA-3456 | star-gazing
Title: What qualifies as a good place for stargazing, i.e. with least light pollution? I know that minimal light pollution is a must for stargazing, and a place which is away from civilization is better.
Does altitude of a place matter for light pollution?
Does it affect the quality of star gazing? A good... | [
"beside a streetlight",
"the countryside",
"the big city",
"beside a skyscraper"
] | B | as light pollution increases , seeing the stars will be harder |
OpenBookQA | OpenBookQA-3457 | homework, plant-physiology, plant-anatomy
and 'Vascular Plants = Winning! - Crash Course Biology #37'
https://youtu.be/h9oDTMXM7M8?t=373
[5] Osmosis (water compensating solutes) "In Da Club - Membranes & Transport: Crash Course Biology #5"
https://youtu.be/dPKvHrD1eS4?list=PL3EED4C1D684D3ADF&t=148
Ian (and dad <= all ... | [
"form more vegatation",
"harden like rocks",
"start singing",
"fly to space"
] | A | as the amount of water received by a plant increases , that plant will usually grow |
OpenBookQA | OpenBookQA-3458 | general-relativity, black-holes, orbital-motion
The point is that the acceleration you need to avoid falling in is only determined globally, from the condition that you stay in communication with infinity. If you stop accelerating so that you see the particle cross the horizon, the moment you see the particle past the... | [
"jump into volcanoes",
"hit something",
"fly",
"take in air"
] | D | living things require respiration to use energy |
OpenBookQA | OpenBookQA-3459 | evolution, vision, neurophysiology
Mid-reds with mid-greens
Blue-greens with grey and mid-pinks
Bright greens with yellows
Pale pinks with light grey
Mid-reds with mid-brown
Light blues with lilac
There are reports on the benefits of being red-green color blind under certain specific conditions. For example, Morgan e... | [
"a polar bear on a sand dune",
"a lizard appearing like the dead things that fall from trees in the fall",
"a frog that is all white",
"a garter snake on a white driveway"
] | B | An example of camouflage is an organism looking like leaves |
OpenBookQA | OpenBookQA-3460 | manufacturing-engineering, engineering-economics
where both C & E are salable products. The plant was designed line-balanced assuming you'd sell 500 tons of E & 300 tons of C every month. Unfortunately 5 years down the line the market for C is bad. So parts of the line pre-C become underutilized although the rest of t... | [
"bad press",
"eclipse",
"price increases",
"advertising"
] | D | as the sale of a product decreases , the amount of money made by the person selling that product will decrease |
OpenBookQA | OpenBookQA-3461 | homework-and-exercises, pressure
Title: Why is it difficult to cook food on mountains? Why is it difficult to cook food on mountains?
Is it because on increasing pressure boiling point of substance increase and on mountains there is less pressure so less boiling point. Then shouldn't it be easier to cook food on mount... | [
"magic",
"ice",
"luck",
"electricity"
] | D | an electrical device requires electricity to turn on |
OpenBookQA | OpenBookQA-3462 | That would be a total of 5x30 + 3x40 + 2x60 = 390 plants (with an arbitrary factor that we'll set to 1 without loss of generality).
The amount of highbush is 5x30 = 150.
The amount of lowbush is 3x40 = 120.
The amount of hybrid is 2x60 = 120.
If the opossums didn't care, they would likely eat blueberries in this ratio... | [
"corn",
"gravy",
"milk",
"tomatoes"
] | A | as the use of a crop increases , the amount of crops planted will increase |
OpenBookQA | OpenBookQA-3463 | humidity, water-vapour
Title: Water vapor content versus specific humidity I am wondering the difference between water vapor content and specific humidity to determine the moisture availability in the atmosphere. Which one is more acceptable variable to determine the moisture availability in the atmosphere?
I need to ... | [
"wind",
"humidifier",
"cold",
"h2o"
] | D | humidity is the amount of water vapor in the air |
OpenBookQA | OpenBookQA-3464 | cellular-respiration
Title: Do cold blooded animals generate any heat? In explaining energy and work to an 8 year-old I said that all conversion of energy generates heat as a by-product. For example, cars generate heat in their engines and running generates heat in our bodies. Then the 8 year-old said, except for co... | [
"a frog",
"a snake",
"a vulture",
"a lizard"
] | C | a bird is warm-blooded |
OpenBookQA | OpenBookQA-3465 | organic-chemistry
Title: What are the minimal chemical requirements for a food which we all can eat? I've been puzzled by the following though experiment for the past few days:
I want to make my own food from scratch, but I do not know where to start from.
I want to be 100% sure that what I eat will never contains som... | [
"hair",
"shoes",
"inner sustenance canals",
"beach"
] | C | the breaking down of food into simple substances occurs in the digestive system |
OpenBookQA | OpenBookQA-3466 | everyday-chemistry, biochemistry, food-chemistry, terminology
Vitamin D is not strictly a vitamin, rather it is the precursor of one
of the hormones involved in the maintenance of calcium homeostasis and
the regulation of cell proliferation and differentiation, where it has
both endocrine and paracrine actions.
... | [
"orange juice",
"a hamburger",
"popcorn",
"a cows utter"
] | D | dairy is a source of Vitamin D |
OpenBookQA | OpenBookQA-3467 | photosynthesis, botany
Title: Photosynthesis - Light Intensity Say I was conducting an experiment for photosynthesis. If I moved light closer to the plant, what effect would this have on the process of photosynthesis? The rate of photosynthesis varies from plant to plant. Some plants require more light and some requir... | [
"light",
"sun",
"gloom",
"sun rays"
] | C | darkness has a negative impact on photosynthesis |
OpenBookQA | OpenBookQA-3468 | botany, plant-physiology, plant-anatomy
It made me wonder if we are simulating the sun in a dark room for growing the plants with the help of red, blue, and a little bit of far-red light, what will happen to the plants if we keep the ideal conditions for which the plants carry out photosynthesis whole day? Does it aff... | [
"Pizza",
"Lollipops",
"Candles",
"French beans"
] | D | a greenhouse is used to protect plants from the cold |
OpenBookQA | OpenBookQA-3469 | thermodynamics, perception
Title: Our Perception of Heat Our body temperature is roughly 37 degrees celsius (that is, when we measure our body temperature externally, by using a thermometer that measures the temperature of our skin usually between our arm and side torso), whereas most of us would say that 25 degrees w... | [
"Pants",
"Chilly",
"Hot",
"Funny"
] | B | cool temperatures cause animals to shiver |
OpenBookQA | OpenBookQA-3470 | neuroscience, perception, senses
Fig. 1. The BrainPort converts camera images into a 'grayscale' 400 pixel electrotactile image on the tongue. It partially restores visual function in the blind. Picture source: Midday Daily
The following is multiple choice question (with options) to answer.
Blind people are unable to... | [
"flying",
"singing",
"smiling",
"hands"
] | D | the shape of an object can be discovered through feeling that object |
OpenBookQA | OpenBookQA-3471 | human-biology, reproduction
Title: Why are animal births not taken as seriously as human births? When humans give birth, more than often medical assistance is needed. Others gather around and frantically look for any way to help. But when an animal gives birth, it is usually seen as a moment where you give the female ... | [
"hen",
"hotcake",
"healfish",
"hare"
] | D | mammals give birth to live young |
OpenBookQA | OpenBookQA-3472 | homework-and-exercises, electric-circuits, electrical-resistance, batteries
Title: When a circuit with three lights goes from series to combination, with one on the main loop and two on different branches, does power in branches $↓$? I am considering a circuit with three light bulbs. When a series circuit goes to a se... | [
"Just stay in the downstairs rooms",
"set up an array of drinking glasses",
"set up an array of mirrors",
"Unscrew a light bulb downstairs and move it upstairs"
] | C | a mirror reflects light |
OpenBookQA | OpenBookQA-3473 | soil, moon
Title: What is the difference between lunar and earth soil I know that the moon has lunar regolith and earth has earth soil, but what is the difference between them? The single biggest difference is the lack of chemical weathering in lunar soils which are subject to physical weathering almost exclusively. I... | [
"dermis",
"Buddy",
"Magic",
"Tears"
] | A | studying a soil sample means studying the microorganisms in that soil |
OpenBookQA | OpenBookQA-3474 | visible-light, reflection, glass
There are actually many more "after", but as every next one is around 96% dimmer than the previous (exact number courtesy of Jan Hudec), only the first is noticeable. They're all spaced nicely and evenly, because this spacing is determined by the thickness of the glass.
This effect has... | [
"a black bag",
"a yellow shirt",
"a blue shirt",
"brown shoes"
] | B | as lightness in color of an object increases , the ability of that object to reflect light will increase |
OpenBookQA | OpenBookQA-3475 | everyday-chemistry, water, absorption
Fig. B is complete speculation on my part as I did not return to the home during Winter to observe it. However in Spring when I returned, all of the tubs had experienced a change in their appearance.
All the tubs were now dry again, presumably down to evaporation due to increasin... | [
"making happy faces",
"occupying more space",
"cheerleaders",
"banana ice cream"
] | B | ice wedging is when ice causes rocks to crack by expanding in openings |
OpenBookQA | OpenBookQA-3476 | homework-and-exercises, optics, reflection, refraction, geometric-optics
Title: Formation of a second image due to reflection at a boundary
To determine the refractive index of a transparent plate of glass, a
microscope is first focused on a tiny scratch in the upper surface,
and the barrel position is recorded. ... | [
"mass",
"ego",
"volume",
"perception of objects"
] | D | magnifying makes seeing small things easier through using a microscope |
OpenBookQA | OpenBookQA-3477 | evolution, botany, development, fruit, seeds
What is the point of fruit if not to be eaten? It’s my understanding that organisms will adapt to survive and thrive. I understand that being eaten can spread seeds, but this just seems like too much of a risky tactic to rely on.
Following on from part one: If being eaten i... | [
"throwing the seeds away",
"telling the plants to grow up",
"using a table lamp",
"mowing down the grass to nothingness"
] | C | seeds may sprout when buried in soil |
OpenBookQA | OpenBookQA-3478 | electrophysiology, ichthyology, bioenergetics, energy, limnology
Containment
They also, as an aside, have to be careful to not electrocute themselves and stop their own hearts, and they have to take care not to electrocute each other. The father will keep his fry in his mouth, and signal them as to where they should g... | [
"a log cabin",
"a metal plane",
"an aluminium cup",
"a tin can"
] | A | wood is an electrical energy insulator |
OpenBookQA | OpenBookQA-3479 | combustion
Title: Would blowing someone else's candle out make mine shine brighter?
Is the claim in this sign correct? Would a candle shine slightly brighter with slightly more oxygen in the room?
And what do you mean "The candles aren't literal."? The claim is certainly true for candles in different rooms. Even in ... | [
"cool",
"freeze",
"regenerate",
"scorch"
] | D | lighting a candle causes that candle to burn |
OpenBookQA | OpenBookQA-3480 | navigation, move-base
Comment by hc on 2018-10-19:
Indeed how do you make sure that the min velocity (forward or backward) is enough to overcome friction?
Comment by RicoJ on 2020-09-07:
Overcoming friction is more related to the lower level motor controls of your application. If you're using Gazebo, there are ways to... | [
"sing to them",
"cry to them",
"hug them",
"send a letter"
] | C | a force acting on an object in the opposite direction that the object is moving can cause that object 's speed to decrease in a forward motion |
OpenBookQA | OpenBookQA-3481 | [13]:
nutrients = pd.DataFrame(
index=[
"Vitamin A",
"Vitamin B1",
"Vitamin C",
"Calcium",
"Iron",
"Phosphorus",
"Potassium",
"Total fat",
"Carbohydrates",
"Proteins",
]
)
nutrients["DRI"] = [800, 1.1, 80, 800, 14, 700, 2000, 70, 260, 50]
nutrients["Chicken Breast"] = [0, 0.1, 0, 4, 0.40, 210, 370, 0.8, 0, 23.3]
nutri... | [
"tell the weather",
"fix wounds",
"grow feathers",
"fly"
] | B | protein is used to repair cells by the human body |
OpenBookQA | OpenBookQA-3482 | Therefore, $$p_{11} = 0.5$$ is the probability of being sunny tomorrow, given that it is sunny today.
You would want to use your record to test the MC assumption.
Example 2:
Recall the weather pattern MC in example 1. You are planning a two-day holiday to begin in seven days, i.e., you are away on day $$7$$ and $$8$... | [
"biking",
"space travel",
"magic",
"time travel"
] | A | clear weather means sunny weather |
OpenBookQA | OpenBookQA-3483 | earthquakes
Title: Earthquakes PGA/PGV in time? Good day! On USGS web-site I can get co-called PGA/PGV (Peak Ground Acceleration/Velocity) values in the region of earthquake. It is possible to get the map of velocities with respect to time (to see how earthquake developed in time)?
Thank you. No. However, you can look... | [
"cutting paper",
"crumpling foil",
"folding paper",
"eating foil"
] | B | earthquakes cause rock layers to fold on top of each other |
OpenBookQA | OpenBookQA-3484 | # probability question on a customer
A very frustrated customer is trying to find an electronic receipt on their phone so they can return an item. The trouble is that the customer has three email accounts and can't remember which, one, account it was sent to. The customer assumes that there is an equal probability for... | [
"blizzard conditions",
"snow",
"sleet",
"rain"
] | A | sleet is made of ice |
OpenBookQA | OpenBookQA-3485 | geology, oceanography, geochemistry, mineralogy
Title: Will the sea get saltier forever? The sea wasn't always salty. It's been getting saltier over millions of years as minerals dissolve.
Is there a natural limit to this process, or the will the sea keep getting saltier forever?
Is there a natural process which remov... | [
"lava",
"chips",
"sodium",
"grapes"
] | C | the ocean contains large amounts of salt water |
OpenBookQA | OpenBookQA-3486 | meteorology, atmosphere, atmospheric-chemistry, air-quality
Title: The difference of vertical advection and convection process for chemistry species In atmospheric, the change of mixing ration $C_i$ of a chemical species $i$ is determined by:
$\frac{\partial C_i }{\partial t} = -\bigtriangledown (VC_i)+\frac{... | [
"freezing",
"warmness distribution",
"frosting",
"icing"
] | B | uneven heating causes convection |
OpenBookQA | OpenBookQA-3487 | meteorology, climate-change, gas, pollution
If you are interested in Greenhouse Gases (e.g. methane, carbon dioxide, CFCs, nitrous oxide), the EPA has a separate site for those emissions since they are not part of the same regulatory framework http://www.epa.gov/climatechange/ghgemissions/ . Greenhouse gases typical... | [
"reflections",
"humidity",
"depth",
"hotness"
] | D | as the amount of polluting gasses in the atmoshere increases , the atmospheric temperature will increase |
OpenBookQA | OpenBookQA-3488 | classical-mechanics, energy, electricity
Title: Can we imagine having a computer keyboard that recharges itself through mechanical utilization? Silly question here.
I have a debate with my father, and while I am decent at high school level physics, both he and I cannot determinate through calculus which of us is wrong... | [
"curling iron",
"iron weight",
"iron wrench",
"potential energy"
] | A | electric devices require electrical energy to function |
OpenBookQA | OpenBookQA-3489 | zoology
Capybara, rabbits, hamsters and other related species do not have a complex ruminant digestive system. Instead they extract more nutrition from grass by giving their food a second pass through the gut. Soft fecal pellets of partially digested food are excreted and generally consumed immediately. Consuming thes... | [
"sleeping",
"sweeping",
"hunting",
"falling"
] | C | An example of hunting is an otter cracking open clams with a rock |
OpenBookQA | OpenBookQA-3490 | ornithology
Within brood competition
If one sex is stronger as a chick it possible that the broods could become sex biased in certain conditions which consistently favour one over the other.
Consequence of environmental strain
Similarly to the last two points, if conditions are poor it may be harder for one sex to re... | [
"a raven",
"a goat",
"a horse",
"a cat"
] | A | if an animal hatches from an egg then that animal is born |
OpenBookQA | OpenBookQA-3491 | reproduction
Title: Why are so many species reproducing late this year? Hope this question is OK for this site, couldn't see where else to ask it.
We've spent a few days out in the countryside recently, and have been very surprised at how many species appear to have very young offspring so late in the season. I was al... | [
"skin",
"scales",
"exoskeletons",
"gills"
] | A | live birth means developing inside the mother instead of an egg |
OpenBookQA | OpenBookQA-3492 | meteorology, atmosphere, carbon, co2, rain
Bear in mind that this assumes an enormous rainfall intensity, 100% CO2 saturation of the water and equilibrium chemical dynamics. After the raindrops hit the ground at least half of it will immediately re-evaporate back into the air, leaving, at absolute most, about 3% of th... | [
"the fruit of a pear tree",
"the seeds of a tree",
"the flat appendages on organisms that give off oxygen",
"the lungs of a dog"
] | C | transpiration usually happens in the leaves of a plant |
OpenBookQA | OpenBookQA-3493 | zoology, pathology, herpetology
Title: How do pet gecko lizards pose a health risk? Does having gecko lizards living in your house pose any health risk? If you're referring to keeping geckos as pets, like all reptiles, amphibians and birds, they come with a small but finite risk of contracting salmonellosis. Having sa... | [
"big dogs",
"six legged creatures",
"ears of corn",
"well done steaks"
] | B | lizards eat insects |
OpenBookQA | OpenBookQA-3494 | inorganic-chemistry, redox, combustion
As M. Farooq pointed out a combustion reaction happens quickly, producing heat, and usually light and fire. For example, lets look at combustion reaction of an alkene (a hydrocarbon). If it is a complete combustion, the fire have a blue flame:
$$\ce{C_nH_{2n} + $\frac{3n}{2}$ O2... | [
"great",
"safe",
"fine",
"damaged"
] | D | a car engine usually converts gasoline into motion and heat through combustion |
OpenBookQA | OpenBookQA-3495 | evolution, natural-selection, theoretical-biology
Title: Probability of Extinction under Genetic Drift Here is the Wright-Fisher model of genetic drift:
$$\frac{(2N)!}{k!(2N-k)!}p^kq^{2N-k} \Leftrightarrow \binom{2N}{k}p^kq^{2N-k}$$
where $\binom{2N}{k}$ is the binomial coefficient.
This formula gives the probability ... | [
"Extinct",
"Near-threatened",
"Vulnerable",
"Endangered"
] | D | if an organism dies then the population of that organism will decrease |
OpenBookQA | OpenBookQA-3496 | solar-system, coordinate, stellar-astrophysics
Can you see either in the sky now. Do they look the same? If yes you are in the same hemisphere you normally live in. If they look strange - upside down. You are in the hemisphere opposite to where you normally live.
You've just spent the rest of the night looking at the ... | [
"unchanged",
"gone",
"unmoved",
"differently placed"
] | D | the Earth revolving around the sun causes stars to appear in different areas in the sky at different times of year |
OpenBookQA | OpenBookQA-3497 | They will have the same amount of money in about ${\color{blue}10\tfrac{1}{2}}$ years.
At that time, they will have: . $6(1.11^{10.5}) \:=\:8(1.08^{10.5}) \:\approx\:{\color{blue}\17.95}\;\;{\color{red}(d )}$
You are so right, soroban. I actually solved for time instead of amount. I've edited my post to indicate that... | [
"Wear shorts and enjoy the warmth",
"Wear heavy clothing when outdoors",
"Go down to the beach in swimwear",
"Start planting seeds in their garden"
] | B | December is during the winter in the northern hemisphere |
OpenBookQA | OpenBookQA-3498 | soil
Caliche generally forms when minerals leach from the upper layer of the soil (the A horizon) and accumulate in the next layer (the B horizon), at depths around 3 to 10 feet under the surface. It generally consists of carbonates in semiarid regions—in arid regions, less-soluble minerals form caliche layers after a... | [
"plastic bottles breaking down",
"falling from the sky",
"the fumes from car exhaust",
"animals stepping on dead leaves and crushing it into bits"
] | D | soil is formed by rocks eroding |
OpenBookQA | OpenBookQA-3499 | newtonian-mechanics, thermodynamics, energy-conservation, potential-energy, dissipation
Title: Potential, Kinetic, Thermal Energy? When things move, potential energy turns into Kinetic energy, right? Then how does Kinetic energy convert to thermal energy? "Thermal energy" is just kinetic energy.
When people talk about... | [
"cold",
"freezers",
"igniters",
"protectors"
] | D | down feathers are a thermal energy insulator |
OpenBookQA | OpenBookQA-3500 | At the end of the 3rd year the number of trees would be $$(\frac{5}{4})^3*x$$; At the end of the 4th year the number of trees would be $$(\frac{5}{4})^4*x$$; At the end of the $$n_{th}$$ year the number of trees would be $$(\frac{5}{4})^n*x$$; So, we have that $$(\frac{5}{4})^4*x=6,250$$ --> $$\frac{5^4}{4^4}*x=5^4*10$... | [
"shrunk",
"produced pine cones",
"had mistletoe",
"grown"
] | D | a tree growing a tree-growth ring occurs once per year |
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