source string | id string | question string | options list | answer string | reasoning string |
|---|---|---|---|---|---|
OpenBookQA | OpenBookQA-3301 | telescope, mars
Have a look at this guide explaining how consumer-grade computer webcams can be used. It contains a neat comparison of a single frame and a stacked image.
Please note that I'm merely speculating as to which techiniques could be used to obtain such images. I can see that the author posted their email on... | [
"sunlight",
"calculators",
"nikon devices",
"camera batteries"
] | C | a camera is used for recording images |
OpenBookQA | OpenBookQA-3302 | Now, imagine that we clap at every time point following the first clap and that the intensity of each clap is given by the function $$f(t)$$, then the resultant sound intensity heard at time $$t=\kappa$$ will be given by
$(f*g)(\kappa) = \int_{0}^{\tau}f(\tau).g(\kappa - \tau) \,d\tau.$
For the discrete case, we have... | [
"solar flares",
"urine",
"indignant",
"echo"
] | D | when a sound is produced inside of a room , there is sometimes an echo after the sound |
OpenBookQA | OpenBookQA-3303 | tidal-forces, trappist-1
Overall, and this is entirely opinion based and from my calculations above, but I'd say the chances of the inter-planetary tidal heating having significant effects on the interior heat of of these planets is negligible. More than likely the biggest contributing factor is radioactive decay, fol... | [
"the red planet mars",
"the moon of the earth",
"the Orion star cluster",
"a major player in photosynthesis"
] | D | a planet is exposed to the heat of the star around which it revolves |
OpenBookQA | OpenBookQA-3304 | $$p_6 = \frac{1+9+36+84+126+126}{2^9} = \frac{382}{512} = \frac{191}{256}$$
Here's how this comes about: There are only two possible final states: certain drought, and certain rain. For any $k, 0 \leq k \leq 10$, let $p_k$ be the probability that the final state will be certain rain, given that the initial probability... | [
"storm",
"quiet",
"gathered moisture",
"puddles"
] | C | rainfall is the amount of rain an area receives |
OpenBookQA | OpenBookQA-3305 | electricity
Title: Why can touching an iPod charger sometimes cause one's skin to tingle? I was visiting Shanghai recently. One afternoon, while sitting on the sofa, I inadvertently brushed a family member's arm. To my surprise, I felt an unnatural tingling from his skin—quite like a mild version of the shock from a (... | [
"very warm",
"cold",
"hot",
"moderately warm"
] | B | electrical current running through a wire causes that wire to heat up |
OpenBookQA | OpenBookQA-3306 | optics, everyday-life, reflection
Title: What are natural retro-reflectors? Recently I was on an airplane on a sunny day. The sun was shining on the other side of the plane and noticed a bright patch on the ground following beside us. Eventually I noticed a dark centre to this bright patch, the plane's shadow, which ... | [
"more intense",
"duller",
"more distant",
"more dim"
] | A | as a source of light becomes closer , that source will appear brighter |
OpenBookQA | OpenBookQA-3307 | 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... | [
"pigs rolling in mud",
"floors being swept clean",
"people eating deli ham",
"voles consuming oak pips"
] | D | An example of seed dispersal is animals eating seeds |
OpenBookQA | OpenBookQA-3308 | electromagnetism, electricity, insulators
Title: How can a glass rod become charged if it is an insulator? I was reading some of the other questions, and I found this one about a glass rod and how it gains a net charge when rubbed with a silk scarf. I learned from working in a shop one summer that most solids are insu... | [
"a flip flop",
"a can",
"water",
"a car"
] | A | rubber is an thermal insulator |
OpenBookQA | OpenBookQA-3309 | heating-systems
Comparison between the two.
So you can see that, while you use more efficiently the primary energy with the steam boiler, if the electricity you get is from a renewable source then the ceramic might be more environmentally friendly.
Of course, I avoid going into the discussion about carbon emissions, o... | [
"a nuclear sub",
"the space shuttle",
"a locomotive",
"a solar panel"
] | C | coal is used to produce electricity by burning in coal-fire power stations |
OpenBookQA | OpenBookQA-3310 | 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... | [
"soil",
"land",
"droplets",
"cheese"
] | C | drought means available water decreases in an environment |
OpenBookQA | OpenBookQA-3311 | visible-light, electromagnetic-radiation, speed-of-light, everyday-life, atmospheric-science
If the blocking occurred close to the sun, you would see the opening of the blocking ca. 8 minutes after it happened, but you would also feel it 8 min after it happened. Thus you would experience both at the same time.
An anal... | [
"lava",
"seashells",
"rocks",
"water"
] | D | cloudy means the presence of clouds in the sky |
OpenBookQA | OpenBookQA-3312 | waves, acoustics, perception, harmonics
Does an object have a single timbre or multiple timbres?
Does an randomly evolving noise have timbre? (Is timbre applicable where there is no consistency and recognizability?) Timbre does not have a precise formal definition in physics, in sense that concepts such as force, mas... | [
"blowing pipes",
"sleeping",
"walking",
"talking"
] | A | An example of playing a musical instrument is strumming a guitar string |
OpenBookQA | OpenBookQA-3313 | optics, visible-light, vision, absorption, laboratory-safety
Title: Why are UV protective eyeware Orange? Many industrial processes use uv as a curing agent. When one uses such a process, one must protect one's eyes from the radiation. Most uv protective gear I have seen is tinted orange?
Does this orange color come... | [
"a bird",
"a sweater",
"a cat",
"a dog"
] | B | tinted lenses reflect ultraviolet rays |
OpenBookQA | OpenBookQA-3314 | entomology, ethology, habitat
Title: Preferred criteria for new bee colony location As a human I want a house with a roof, indoor plumbing, bug free, and make my wife happy. I don't want to drive too far to work, and it has to be well-suited for offspring.
What are the criteria that define a "good spot" for a new loc... | [
"time travel",
"metal",
"cars",
"basil"
] | D | An insect is a pollinating animal |
OpenBookQA | OpenBookQA-3315 | electromagnetism, electricity, energy-conservation, perpetual-motion
Title: Auto spinning turbine generator This might be dumb question but I'm so curious to know if this actually works or is impossible. I was researching how you could generate electricity from magnets and copper wire and also have read how the hydroe... | [
"propane stove",
"gas stove",
"corn stove",
"solar stove"
] | D | solar energy is an inexhaustible resource |
OpenBookQA | OpenBookQA-3316 | temperature, water
Title: Sudden Localized Surface Water Temperature Increase In Eastern Lake Superior, Canada As can be seen in the below sequence of NOAA images spanning 15 hours (most recent at top), in extreme eastern Lake Superior the surface water (but not bottom water) temperature increased dramatically in a lo... | [
"English Premier Leagues",
"catfish",
"airplanes",
"volcanoes"
] | B | as water increases in an environment , the population of aquatic animals will increase |
OpenBookQA | OpenBookQA-3317 | ecology, behaviour, sociality, predation, community-ecology
Title: How selective are wolves about the size of their prey? For an animal that lives and hunts socially like a wolf, is there a lower threshold to the size of prey items they will hunt? A pack wouldn't have much trouble with catching say a rabbit, but would... | [
"morality",
"skis",
"ethics",
"touch"
] | D | feeling is when an living thing senses through touch |
OpenBookQA | OpenBookQA-3318 | radiation
Title: Why can sunlight heat an object on the other side of glass? Q1. Why can sunlight heat an object on the other side of glass, but normal light from a CFL or Incandescent Light bulb can't.
Q2. Do they make a light bulb that can do this? I need to increase the tempature and objects inside a glass tank.
I'... | [
"melting ice",
"aluminium foil",
"blocks of ice",
"soft cheese"
] | B | a thermal energy conductor transfers heat from hotter objects to cooler objects |
OpenBookQA | OpenBookQA-3319 | geology, volcanology, mineralogy, minerals
Title: Where can obsidian be found? Where is obsidian found?
Is it typically found on the surface or underground?
If underground, how far under (meters or feet would be perfect)?
Also, is it found everywhere on Earth, or just in areas where volcanic activity is (or was recen... | [
"natures floor",
"grounded lightning",
"sky",
"ground images"
] | A | lava is found above the ground |
OpenBookQA | OpenBookQA-3320 | synthesis, safety, polymers, green-chemistry
They are divided into two distinct groups, with very different applications, toxicological properties, and classification, based on the number of carbon atoms in their alcohol chain.
Phthalates aren't covalently bonded to the matrix of PVC. Therefore, the lighter ones can ... | [
"stars",
"unicorns",
"black holes",
"corn"
] | D | processes sometimes produce waste products |
OpenBookQA | OpenBookQA-3321 | biochemistry, botany, plant-physiology, photosynthesis
What are typical characteristics of different plants in this regard? I.e., how do common species of plants manage their C consumption before (and after) the development of leaves? There are quite a few questions and thoughts in there, I'll try to cover them all:
F... | [
"breathable air",
"tears",
"sweat",
"water"
] | A | plants are a source of oxygen through photosynthesis |
OpenBookQA | OpenBookQA-3322 | rocks, remote-sensing, archaeology, ground-truth
Together, #1, #2, and #3 tell us that it's probably early summer just after the river ice has broken up.
The tooth-like features in the left image are simply erosional remnants sticking out of the riverbank. They could be bedrock (not likely), ice wedges, unmelted perm... | [
"fluid",
"corn",
"meat",
"trees"
] | A | a glacier is made of ice |
OpenBookQA | OpenBookQA-3323 | proteins, digestive-system
Title: Why do humans cook animal meat Why do humans "need" to cook animal meat?
It seems there's an aspect of safety to it: are other animals (eg, house cats, dogs) not vulnerable to the same diseases we get from modern food processing of meats?
But it also seems there's something else to it... | [
"cover it with ketchup",
"eat it when it's raw",
"take the meat from a dead raccoon in the road",
"cook it very thoroughly"
] | D | bacteria cause food poisoning |
OpenBookQA | OpenBookQA-3324 | astronomy, everyday-life, popular-science, climate-science
It is for much the same reason that Winter is colder than Autumn, even though they have the same amount of daylight hours.
The following is multiple choice question (with options) to answer.
Animals need to get ready for the changing seasons in various ways. ... | [
"ears fall off",
"fur get thinner",
"fur get thicker",
"nose get blue"
] | C | An example of a seasonal change is an animal growing thick fur for keeping warm in the winter |
OpenBookQA | OpenBookQA-3325 | biochemistry, food
Title: Who creates first nitrogen compounds in the food supply chain As I understand the food supply chain, organic compounds have to be created from a unlimited source (air, water...).
For instance, I figure that plants transform CO2 from air to organic carbon compounds, mainly carbohydrates, which... | [
"daffodils",
"flower toys",
"sunlight",
"groundwater"
] | A | a flower is a source of nectar |
OpenBookQA | OpenBookQA-3326 | Note:
Depending on where, and how frequently, you round during this function, your answers may be off a few cents in either direction. Try rounding as few times as possible in order to increase the accuracy of your result.
The following is multiple choice question (with options) to answer.
Which is most accurate? | [
"dams can capture powerful gusts and harness their power",
"windmills can capture lightning bolts and harness their power",
"dams can capture lightning bolts and harness their power",
"windmills can capture powerful gusts and harness their power"
] | D | wind is a source of energy |
OpenBookQA | OpenBookQA-3327 | evolution, ornithology, ethology, sexual-selection
Bateson P. 1978. Sexual imprinting and optimal outbreeding. Nature 273, 659 - 660.
Bereczkei T, Gyuris P, Weisfeld GE. 2004. Sexual imprinting in human mate choice. Proceedings of the Royal Society of London, Series B: Biological Sciences 271: 1129–1134.
Immelmann K... | [
"a chick",
"a rock",
"a human baby",
"an egg"
] | A | a mother births offspring |
OpenBookQA | OpenBookQA-3328 | newtonian-mechanics, newtonian-gravity, air, drag
$$\frac{v}{v'} = \frac{60 m/s}{15 m/s} $$
$$ \frac{g}{g'} = \left(\frac{60}{15}\right)^2 = 16$$
So my answer is quite simply that gravity would have to be 1/16th as strong as it is on Earth, or $0.6 m/s$. Are there any bodies in the solar system quite like this? Wik... | [
"a bull on the couch",
"a mouse in the wall",
"a duck in the pond",
"a dog in the field"
] | A | the mass of a planet causes the pull of gravity on that planet |
OpenBookQA | OpenBookQA-3329 | zoology
Title: What is the reason for cats not liking water? I have two cats myself, a Siberian and a Maine Coon, neither of which like water. In fact, they detest it - like most cats. I was wondering what the reason for this was and if any of you have any interesting theories as to why this is the case.
Thanks in adv... | [
"good health",
"a good place",
"danger",
"safe ranges"
] | C | an animal usually requires a warm body temperature for survival |
OpenBookQA | OpenBookQA-3330 | If $\lambda$ is the expected times that you get spotted every hour, then $\theta=\frac{1}{\lambda}\$ is the expected time between events.
The number of events given in $t$ can be modeled by a random variable $N \sim Poisson(\lambda·t)$ where $t$ is the amount of time (in hours) elapsed, and the time between events can... | [
"a large star appearing and disappearing",
"an earthquake and a tornado",
"a rainbow and a tsunami appearing",
"a dog barking and a vitamin being eaten"
] | A | the sun setting occurs once per day |
OpenBookQA | OpenBookQA-3331 | experimental-physics, astronomy
This comment from Count Iblis, above,
You should just assemble a few devices that are as powerful as you can make them, perhaps 100 Gigaton TNT. Then you get an output that is 20 times the power emitted by the Sun, albeit for a fraction of a second. That will generate enough of a sign... | [
"having water",
"having reflectors",
"having signs",
"having books"
] | B | a reflector is used to reflect light especially on vehicles |
OpenBookQA | OpenBookQA-3332 | genetics, epidemiology, biostatistics
That is the denominator.
Taking that group of people, we can then ask:
Of those people that have the disease, what proportion of this affected group has a full sibling that also has the disease?
That is the numerator.
So if we have a population of 100 people, say 10 people have ... | [
"a person with a healthy white blood cell",
"a person with optimal conditions",
"a person with a weak white blood cell",
"an athlete with a clean bill of health"
] | C | white blood cell destroys pathogens in the body |
OpenBookQA | OpenBookQA-3333 | It just turns out nicely for C that he is one of the people whose hat colors D and C both know about.
To introduce a modified challange: if the task were to yell out C's hat color right away, D would know for certain, C would have the increased probability of $2/3$ and A and B would be stuck with the random guess of $... | [
"newborn turtles crawling towards the sea",
"seals clapping to the delight of an audience",
"ducks sitting on their eggs (D) baby birds chewing worms",
"mother dogs nursing their pups"
] | B | if an animal is trained to do something then that something is a learned behavior |
OpenBookQA | OpenBookQA-3334 | home-experiment, oxidation-state
Title: the perfect campfire As far as chemistry goes, there are laws or observations that can be useful to determine the perfect shape and disposition of the wood in a campfire ?
For example what chemistry says about the 2 most popular "shapes"
teepee
log cabin
or even other varia... | [
"good for food",
"a cool source",
"meant to sleep",
"a exothermic reaction"
] | D | an exothermic reaction increases the amount of heat |
OpenBookQA | OpenBookQA-3335 | glaciology, glacier, ice
What would be a good average to take? This is a non-trivial issue. When you look at volume change of a glacier, you typically subtract two digital elevation models to obtain the difference between the two. First, you must differentiate between ice sheets where ice berg calving reduces volume a... | [
"crocodile",
"tortoise",
"Komodo dragon",
"rattlesnake"
] | B | a glacier moves slowly |
OpenBookQA | OpenBookQA-3336 | 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 ... | [
"hot",
"cold",
"sound",
"kinetic"
] | A | as temperature in an environment decreases , the amount of water an animal in that environment will lose will decrease |
OpenBookQA | OpenBookQA-3337 | human-anatomy
Taken from here such people would be able to dislocate then get their hands in front and relocate.
The body can be trained to be quite flexible through training like gymnastics etc...
The following is multiple choice question (with options) to answer.
humans will have to flee if their home is | [
"being built",
"being painted",
"demolished",
"prepared"
] | C | shelter can protect humans from weather |
OpenBookQA | OpenBookQA-3338 | zoology, ichthyology, marine-biology
Switek goes on to to talk about exceptions in some marine mammals:
At this point some of you might raise the point that living pinnipeds like seals and sea lions move in a side-to-side motion underwater. That may be true on a superficial level, but pinnipeds primarily use their mo... | [
"dungeons",
"lava",
"deserts",
"saltwater"
] | D | large fins can be used to move quickly through water |
OpenBookQA | OpenBookQA-3339 | 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 ... | [
"granite",
"shale",
"trees",
"marble"
] | B | nearly all fossils are found in sedimentary rock |
OpenBookQA | OpenBookQA-3340 | soft-question, theory-of-everything
Title: Physics after a Theory of Everything There is a lot of controversy over the existence of a Theory of Everything (ToE), and as far as I know, we are a long way from having a possible candidate. But what interests me is, what after that? If a Theory of Everything is truly found... | [
"decompose",
"freeze in time",
"become lively",
"regenerate"
] | A | dead organisms decay |
OpenBookQA | OpenBookQA-3341 | meteorology, climate-change, gas, pollution
Title: Regarding various types of atmospheric pollution Does all the car pollution (from about 150 million cars at least in the U.S. and a lot more in all of North America and the rest of the world) all the smoke-stack pollution of various factories and all the Airline pollu... | [
"chevy rides",
"car pictures",
"sunlight",
"plants"
] | A | using a car causes pollution |
OpenBookQA | OpenBookQA-3342 | palaeontology, herpetology
Title: How big can cold-blooded animals get? It seems impossible to have reptiles the size of dinosaurs, just because they are really big! Did they have different systems of maintaining body temperature or maybe they weren't the exact type of animals that we today call reptiles? Answer is q... | [
"they wanted to be hunted and end up on someone's living room floor",
"it helps them survive in frigid places",
"it helps them live in the desert",
"it's helpful in a rain forest"
] | B | adaptations are used for survival |
OpenBookQA | OpenBookQA-3343 | ecology, population-dynamics, ecosystem, antipredator-adaptation, predation
I would also like to talk about other things that might be of interest in your model (two of them need you to allow evolutionary processes in your model):
1) lineage selection: predators that eat too much end up disappearing because they cause... | [
"Hamsters",
"Snakes",
"Killer Whales",
"Tigers"
] | A | as population of prey decreases , the population of predators will decrease |
OpenBookQA | OpenBookQA-3344 | It just turns out nicely for C that he is one of the people whose hat colors D and C both know about.
To introduce a modified challange: if the task were to yell out C's hat color right away, D would know for certain, C would have the increased probability of $2/3$ and A and B would be stuck with the random guess of $... | [
"Eye color",
"a cartwheel",
"freckles",
"Hair color"
] | B | doing chores is a learned characteristic |
OpenBookQA | OpenBookQA-3345 | co2, oxygen
Title: Could earth run out of O2? Death in a closed environment due to lack of O2 is actually not that bad:
https://www.youtube.com/watch?v=kUfF2MTnqAw
And as far as I know as we are cutting down our life saving woods and jungles less $O_2$ is being produced and more $CO_2$ is not converted back to $O_2$.
... | [
"the moon",
"rocks",
"cactus",
"hair"
] | C | In the photosynthesis process oxygen has the role of waste product |
OpenBookQA | OpenBookQA-3346 | # Logic problem
##### Active member
Consider the following sequence of statements:
$$S_1: \text{at least 1 of the statements }S_1-S_n \text{ is false}\\ S_2: \text{at least 2 of the statements }S_1-S_n \text{ are false}\\ \vdots \\ S_n: \text{at least } n \text{ of the statements }S_1-S_n \text{ are false}$$
Where $n$... | [
"without global warming, most days would be hotter",
"without underground water reservoirs, most days would be hotter",
"without the Sun, most days would be hotter",
"without the ocean, most days would be hotter"
] | D | water absorbs solar energy in the water cycle |
OpenBookQA | OpenBookQA-3347 | botany, terminology, trees
Title: Branch taking over a tree trunk I stumbled upon a birch growing in sandy soil in a coniferous forest in central Russia.
It looks like over time the tree trunk got bent towards the trail and one of the branches became the new trunk as it now grows straight up, whereas the old trunk is ... | [
"Hope",
"Happiness",
"Love",
"Thriving life"
] | D | if a tree falls then that tree is dead |
OpenBookQA | OpenBookQA-3348 | climate-change, climate, paleoclimatology, carbon-cycle
Title: Did climate cool down when underground hydrocarbons stocks formed? As far as I understand, the dominant theory of modern climate change says that recent warming is mainly caused by the massive burning of hydrocarbons that used to be stored in solid form mo... | [
"a plastic set of cups",
"a family of dogs",
"a twelve pack of beer cans",
"a set of silverware"
] | B | an organism is a source of organic material |
OpenBookQA | OpenBookQA-3349 | ### Show Tags
23 Dec 2016, 09:03
2x+50/5x+40=4/6, find x, then don't get into decimals, approx 17.something then 2(17)+5(17)= approx 122
Veritas Prep GMAT Instructor
Joined: 16 Oct 2010
Posts: 9558
Location: Pune, India
Re: Two mixtures A and B contain milk and water in the ratios [#permalink]
### Show Tags
09 Nov ... | [
"it will be glad for it",
"it will be negatively effected",
"it will be positively effected",
"it will be overweight"
] | B | the decrease of something required by an organism has a negative impact on that organism 's survival |
OpenBookQA | OpenBookQA-3350 | sleep
Title: What are the essential criteria for sleep in living organisms? I was reading this fascinating article about how sleep evolved before brains, and it got me thinking "can plants sleep" and "what is sleep anyway".
A line in the article states:
Studies by a team in South Korea and Japan showed that the hydra... | [
"torture",
"anxiety",
"ear plugs",
"stress"
] | C | when sound reaches the ear , that sound can be heard |
OpenBookQA | OpenBookQA-3351 | population-dynamics, population-biology
Title: Spread of a benign virus in a population over time This is a somewhat difficult (for me) population dynamics question and I wonder if someone with experience in this area could suggest a reasonable approach?
My simplifying assumptions: As a gross oversimplification, let ... | [
"from the deaths of many organisms",
"from a boom in reproduction of an organism",
"from natural predators hunting organisms",
"from organisms self regulating their population"
] | B | if the population of an organism increases then the ecosystem may become overpopulated with that organism |
OpenBookQA | OpenBookQA-3352 | entomology
Title: What is the name of this tiny creature? It looks like a tiny piece of moving cotton? By chance, I saw this tiny insect on my bag a few days ago in Sydney. Am I the first person who has pinpointed this animal?! If not can you please let me know its name? From your image, it looks like it might be a wo... | [
"clam",
"fly",
"fish",
"dalmatian"
] | D | shedding is when an animal loses hair |
OpenBookQA | OpenBookQA-3353 | human-biology, brain
So back to your original question: why don't we consciously know how our bodies work? Because it's completely unnecessary to know this for normal day to day operation in the context in which animals evolved.
The following is multiple choice question (with options) to answer.
how does an animal kn... | [
"it is built into their very being",
"it is taught in school",
"they are trained at a special school",
"they have magical powers"
] | A | An example of an instinct is the kangaroo 's ability to crawl into its mother 's pouch to drink milk |
OpenBookQA | OpenBookQA-3354 | biochemistry, botany, plant-physiology, photosynthesis
What are typical characteristics of different plants in this regard? I.e., how do common species of plants manage their C consumption before (and after) the development of leaves? There are quite a few questions and thoughts in there, I'll try to cover them all:
F... | [
"magic",
"candy",
"sustenance",
"cars"
] | C | a leaf performs photosynthesis |
OpenBookQA | OpenBookQA-3355 | 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... | [
"a hare grows longer fur",
"a worm grows longer fur",
"a worm sings louder",
"a hare sings louder"
] | A | seasonal changes are made in response to changes in the environment |
OpenBookQA | OpenBookQA-3356 | metabolism, ecology, photosynthesis
Title: Why isn't phosphorus or nitrogen a limiting nutrient for animals? Nitrogen and Phosphorus are usually the limiting nutrient for plants, especially for algae. Phosphorus is used for DNA, ATP and phospholipids, and Nitrogen is used for pretty much every protein a cell might wa... | [
"a rock",
"a ice",
"a waterfall",
"a raven"
] | D | an animal requires nutrients for survival |
OpenBookQA | OpenBookQA-3357 | species-identification
Title: What bird / animal has this call? USA MA NE
I have a bird / animal coming to the trees in the backyard making this call (see link to audio file), which does not really sound like a bird - it's fairly low frequency. I have not seen it. Sometimes it sits in a young tree, where you can almos... | [
"put out some hamburgers to attract them",
"adopt some large dogs to stay in the yard",
"call Here birdy birdy! out the window",
"hang an open box containing tasty seeds from a tree"
] | D | feeders attract animals to a location |
OpenBookQA | OpenBookQA-3358 | mountains, rainfall
Title: Could a waterfall lashing onto a road lead to a landslide? Here is a video of a waterfall lashing on to a mountain road, with vehicles driving under it.
https://youtu.be/cHaguj--YBc
There appears to be a big hole carved out right next to the road, possibly by the force of the waterfall.
Is t... | [
"there could be a tsunami",
"there could be a road blockage",
"there could be an earthquake",
"there could be a volcanic eruption"
] | B | when a body of water receives more water than it can hold , a flood occurs |
OpenBookQA | OpenBookQA-3359 | This lets them bring a 15th bar and catch the train with less than 5 minutes to spare.
It is not possible to move all 16 bars.
Consider the total distance that each person moves, in each direction, carrying each possible number of bars. For example $$R_2^+$$ is the total distance that Rod moves forward while carrying... | [
"a release of vitamins",
"a release of water vapor",
"a blaze of fire",
"a release of heat"
] | D | moving changes stored energy into motion and heat |
OpenBookQA | OpenBookQA-3360 | orbit, the-sun, earth
Notes:
It takes the Earth 365.256363004 days to revolve around
the Sun with respect to the fixed stars, but the time
between vernal equinoxes is slightly less (365.242190402
days) because the position of the vernal equinox moves
(precesses) with respect to the stars. Source:
http://hpiers.obspm.... | [
"365 :: 1",
"52 :: 1",
"33 :: 1",
"1 :: 1"
] | B | a complete revolution of the Earth around the sun takes one solar year |
OpenBookQA | OpenBookQA-3361 | species-identification, botany, ecology
Title: Algae or Lichen identification. Coastal BC, Canada I have tried all books and internet resources I know of, but I still have no idea what this might be — a lichen or something else.
At first glimpse, I thought it was something man-made and unnatural, but then I looked clo... | [
"love",
"dating advice",
"happiness",
"vibrance"
] | D | usually coral lives in warm water |
OpenBookQA | OpenBookQA-3362 | thermodynamics, energy, power
Toyota Corolla, 13 gallon tank, 20% efficiency, 103 kWh usable energy
Tesla Roadster, 56 kWh battery capacity
Chevy Volt, 16 kWh battery capacity
If we compare a liquid Nitrogen car to the Chevy Volt it might not be so bad. But why would we do that? That car can still augment its range... | [
"a socket",
"petroleum products",
"a gasoline pump",
"fossil fuels"
] | A | an electric car contains an electric motor |
OpenBookQA | OpenBookQA-3363 | infection, amphibians
Title: What is this toad suffering from? Myiasis or chytridiomycosis? I found this toad on Aug. 29th at this location: position on osm
I think it is a bufo bufo, approx. 10 cm long. The nostrils seemed to be completely filled with a grey matter and from the activity of the floor of the mouth it ... | [
"zero legs",
"four legs",
"two legs",
"zero parents"
] | A | amphibians hatch from eggs |
OpenBookQA | OpenBookQA-3364 | 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... | [
"firm",
"loose",
"packed tight",
"airless"
] | B | the looseness of soil has a positive impact on a plant 's roots' growth in that soil |
OpenBookQA | OpenBookQA-3365 | evolution, biochemistry, physiology, speculative, bioinorganic-chemistry
While iron skeletons might seem to be an advantage, they are electrochemically unstable - oxygen and water will tend to oxidize (rust) them quickly and the organism would have to spend a lot of energy keeping it in working form. Electrical condu... | [
"ears",
"stomach",
"nose",
"thighs"
] | B | the skeletal system protects internal organs |
OpenBookQA | OpenBookQA-3366 | ecology, database, biodiversity, species-distribution
Title: Database of Geographic Range of Species Is there a database of organisms which would contain their queriable geographic location?
I would need to perform a rather simple query, such as Animals of <Location>, where Location is some well defined geographic ar... | [
"a fish tank",
"human hair",
"a fish",
"a log"
] | D | a tree is a source of food for birds in an ecosystem |
OpenBookQA | OpenBookQA-3367 | evolution, human-evolution
Title: Can there be significant new changes in physical features of Humans due to evolution in 10000 years of span? Humans migrated from Africa about 60000 years. And in these years humans physical features undergone significantly in terms of skin color, hair, eye color and facial features. ... | [
"wearing away",
"boredom",
"social media",
"being sued"
] | A | wind and rain cause erosion |
OpenBookQA | OpenBookQA-3368 | [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... | [
"bamboo",
"a human",
"a lion",
"a horse"
] | A | roots are a vehicle for absorbing water and nutrients from soil into the plant |
OpenBookQA | OpenBookQA-3369 | entropy, potential-energy
A more prosaic answer is that life doesn't seem to have much of a choice about what it's made of. All life on Earth is made of water, proteins, and smaller amounts of lipids and other organic compounds. At the origins of life this probably wouldn't have been so far from equilibrium, since in ... | [
"empty space",
"an osprey",
"one's soul",
"nothingness"
] | B | matter is made of molecules |
OpenBookQA | OpenBookQA-3370 | fluid-mechanics, fluid
Title: Why does this glass tend to stick on surfaces I have a glass here.
This is the bottom face of the glass.
Now this is on what I had kept my glass. There is a little much of water spilled on it. Let us call this thing as C
Now , when I lifted the cup. The C on which I had kept my glass al... | [
"cries",
"plunge",
"Sells",
"laughs"
] | B | dropping something causes that something to fall |
OpenBookQA | OpenBookQA-3371 | organic-chemistry, molecular-structure, molecules, intermolecular-forces, catalysis
It is also important to note that cavity size of CD seems to depend on the method used by the researcher (Ref.4). For instance, Ref.2 reported that inner diameters of $\pu{5.7 Å}$ for $\alpha$-cyclodextrin, $\pu{7.8 Å}$ for $\beta$-cyc... | [
"solid steel",
"solid wood",
"solid glaciers",
"solid mercury"
] | C | when water freezes , that water expands |
OpenBookQA | OpenBookQA-3372 | inorganic-chemistry, acid-base, everyday-chemistry
$$\ce{H2O + CO2(aq) <=> H2CO3}$$
and the protolysis of true $\ce{H2CO3}$
$$\ce{H2CO3 <=> H+ + HCO3-}$$
For a weak acid
$$\begin{align}
\log[\ce{H+}]&\approx\frac12\left(\log K_\mathrm a+\log[\ce{H2CO3^*}]\right)\\
&=\frac12\left(-6.3-5.0\right)\\
&=-5.65\\
\mathrm{pH}... | [
"an indoor pizza",
"an indoor TV",
"inside the house",
"a car's color"
] | D | acid rain has a negative impact on water quality |
OpenBookQA | OpenBookQA-3373 | mechanical-engineering, car, transmission
Title: Friction clutch and the force required I recently learned the basics of automotive clutches, more specifically friction clutches. Here is a simplified version of their operation explained to me (the car starts at rest): The engine and the transmission are connected via ... | [
"cats",
"clouds",
"dogs",
"dead dinosaurs"
] | D | oil is a source of gasoline |
OpenBookQA | OpenBookQA-3374 | human-anatomy
Taken from here such people would be able to dislocate then get their hands in front and relocate.
The body can be trained to be quite flexible through training like gymnastics etc...
The following is multiple choice question (with options) to answer.
If too many humans move into to an given area they m... | [
"illness from malnutrition",
"reproduction going over",
"population just right",
"death"
] | B | as available resources increases , the population of an organism that uses those resources will increase |
OpenBookQA | OpenBookQA-3375 | organic-chemistry, synthesis, plastics, fuel
Title: Can plastic be used as fuel for vehicles? I don't have much of a background in chemistry, but I know that plastics are largely made of carbon, as is oil. Is there any way to "covert", i.e. a plastic water bottle, into a substance that can be used as fuel for ? Thanks... | [
"a vintage motorcycle",
"an older car",
"an 1800's train",
"a modern bus"
] | D | as the use of alternative fuels increases , the use of gasoline will decrease |
OpenBookQA | OpenBookQA-3376 | quantum-mechanics, optics, photons, quantum-optics, thought-experiment
Update So in searching a reliable way to make the estimation, I found this discussion where different approaches are given. I think this is better than any estimation I can sketch at this point.
As for the feasibility of all this, I think the clo... | [
"windows",
"space",
"glass",
"foil"
] | D | shiny things reflect light |
OpenBookQA | OpenBookQA-3377 | # Thread: physics tourist & bear problem
1. ## physics tourist & bear problem
another easy one i think:
A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 3.5 m/s. The car is a distance d away. The bear is 27 m behind the tourist and running at 6.0 m/s. The tourist rea... | [
"see a rainbow",
"learn history",
"time travel",
"have magic"
] | A | bears eat insects |
OpenBookQA | OpenBookQA-3378 | homework-and-exercises, radiation
Title: light beams of the sun
We receive sunlight on earth surface. What type of light beams are these?
Random/Parallel/Converging/Diverging
I think it should be Diverging as Sun is radiating these beams away. But in one book, answer is given as Random, in another it's Parallel. It ... | [
"local star",
"moonbeam",
"lamps",
"lightbulbs"
] | A | when the season changes , the amount of daylight will change |
OpenBookQA | OpenBookQA-3379 | thermodynamics, energy, temperature, estimation
Title: What would happen if a 10-kg cube of iron, at a temperature close to 0 kelvin, suddenly appeared in your living room? What would be the effect of placing an object that cold in an environment that warm? Would the room just get a little colder? Would it kill everyo... | [
"there will be a shock current",
"the circuit will fail to power",
"there would be a short circuit",
"there would be current overload"
] | B | electricity is made of moving charged particles |
OpenBookQA | OpenBookQA-3380 | entomology
Title: What is the name of this tiny creature? It looks like a tiny piece of moving cotton? By chance, I saw this tiny insect on my bag a few days ago in Sydney. Am I the first person who has pinpointed this animal?! If not can you please let me know its name? From your image, it looks like it might be a wo... | [
"job",
"plastic",
"energy",
"nose experience"
] | D | a skunk produces a bad odor |
OpenBookQA | OpenBookQA-3381 | material-science, elasticity, continuum-mechanics, stress-strain
In short, once you properly glue the bottom of the cube to the floor, you can expect something more similar to what visible here
rather than in the picture above.
It is just funny that sketches like the one above are so widely used to explain shear stre... | [
"quartz",
"plastic",
"diamond",
"iron"
] | D | a magnet attracts magnetic metals through magnetism |
OpenBookQA | OpenBookQA-3382 | geothermal-heat, open-data, mining, canada
Title: Canadian equivalent to AMLIS database? I am interested in in situ coal fires. In furtherance of this, I am hoping to find a database of Canadian mine reclamation sites, complete with incident or status reports and descriptions of specific problems.
I've poked around a... | [
"soft drink manufacturing",
"textiles",
"energy generation",
"powering airplanes"
] | C | coal mine is a source of coal under the ground |
OpenBookQA | OpenBookQA-3383 | botany, methods
I think it really depends on the type of plant whether its stems will root or not and how long the stem will retain its rooting potential after being cut.
If possible, you can try the following. Put the cut stem in a small plastic pot (they are very cheap) with soil and see if it roots (leaves will beg... | [
"eating the plant entirely",
"putting the stems in food colouring",
"throwing the plants away",
"pulling out the petals"
] | B | a plant stem contains a system of tubes for transporting water and nutrients to other parts of the plant |
OpenBookQA | OpenBookQA-3384 | palaeontology, herpetology
Title: How big can cold-blooded animals get? It seems impossible to have reptiles the size of dinosaurs, just because they are really big! Did they have different systems of maintaining body temperature or maybe they weren't the exact type of animals that we today call reptiles? Answer is q... | [
"Stays alive",
"stays dead",
"in cream",
"in juice"
] | A | an animal requires warmth for survival |
OpenBookQA | OpenBookQA-3385 | ecology, trees
Title: Why do some trees in California have dead brown leaves but also new green leaves? It's Autumn 2015, and I just saw a tree that had mainly dead brown leaves but also some new small green leaves growing. Why didn't the tree just keep its old leaves? Does it think we are in spring already?
EDIT: To ... | [
"vibrant",
"decisive",
"unliving",
"flowering"
] | C | if a leaf falls off of a tree then that leaf is dead |
OpenBookQA | OpenBookQA-3386 | everyday-life
Due to friction effects though, option c is still best. Pedaling hard will quickly deplete energy reserves while pedaling at a slow but steady rate will allow you to cycle for much longer. From a physics point of view, we cannot help you spend less energy, it will inevitable take about the same amount of... | [
"Jump for hours",
"carry heavy weights",
"Run for hours",
"leisure nap"
] | D | a human requires rest to be healthy |
OpenBookQA | OpenBookQA-3387 | soft-question, research-practice, writing, paper-review, conferences
However, that doesn't mean that you have to partition your work into least publishable units as you describe your coworkers doing, and it also doesn't mean that saving up multiple small results into a single paper is a good way of making your papers ... | [
"stars",
"rubbish",
"ears",
"mice"
] | B | An example of avoiding waste is using an object more than once |
OpenBookQA | OpenBookQA-3388 | the-sun, space, stellar-atmospheres
However, when you have something the Sun or even fog, the optical depth varies with the distance you're looking into that object. I'll talk about fog since it's familiar, but the same idea applies to the Sun's atmosphere. Say you're standing in a forrest and its very foggy out. Ther... | [
"sell it",
"climb it",
"block it out",
"smell it"
] | C | large trees block sunlight from reaching the ground |
OpenBookQA | OpenBookQA-3389 | species-identification, botany, ecology, trees
Title: Identifying a shrub with unusual "many shoots" growth behavior While recently hiking in the southern mountains of New Hampshire, we came across a plant, and some of them were exhibiting what we interpreted to be a disease, or least unusual growth. On some of the no... | [
"sing to it",
"nothing",
"sell it",
"intercept it"
] | D | if a tree falls then sunlight becomes available to the surrounding plants |
OpenBookQA | OpenBookQA-3390 | meteorology, climate-change, gas, pollution
Title: Regarding various types of atmospheric pollution Does all the car pollution (from about 150 million cars at least in the U.S. and a lot more in all of North America and the rest of the world) all the smoke-stack pollution of various factories and all the Airline pollu... | [
"recycling old glass to make a house",
"throwing plastic in the ocean",
"donating clothes to a thrift shop",
"Using old shirts to make a blanket"
] | B | pollution is a source of pollutants |
OpenBookQA | OpenBookQA-3391 | evolution, homework
Title: Can someone help me analyze this article? I need to read this article — "Beyond the rainbow" by
Marie-Claire Koschowitz et al., for an exam.
Following are some questions for which I could not figure the answer out after reading.
1) Why does this miniaturization necessitates insulation ? Fo... | [
"red paint was poured over it",
"it's green with envy",
"it's sitting in a leafy shrub and using camouflage",
"it is feeling nauseous"
] | C | An example of camouflage is when something changes color in order to have the same color as its environment |
OpenBookQA | OpenBookQA-3392 | polymers, plastics
Title: What is Polymer Environmental Resin (PER)? I'm no chemist and I probably wouldn't understand any technical answer but...
I'm investigating the environmental impacts of various materials as compared to PVC and this is one that crops up regularly as a more environmental alternative.
Unfortunate... | [
"ugly",
"worse",
"dead",
"better"
] | D | An example of protecting the environment is reducing the amount of waste |
OpenBookQA | OpenBookQA-3393 | zoology, ethology, learning
Title: How do beavers learn how to build dams? I was wondering whether all beavers, from all around the world, know how to build dams and lodges? Do they need to learn it from their parents? If you release a group of beavers in the wild that haven't been in contact with their parents, would... | [
"a large H2O source",
"a den for tigers",
"a small military camp",
"a giant black hole"
] | A | damming a river can cause a lake to form |
OpenBookQA | OpenBookQA-3394 | water-resources
Location
This plant requires a hot location with large area of cheap land by the ocean and a relatively consistent wind.
Stage 1 - Wave Pump
A wave-powered pump raises sea water into a large lake on land. Here is an example of a direct wave-powered pump, other types of wave power harnessing typically c... | [
"space",
"glaciers",
"sky",
"ground"
] | D | renewable resources can be used over again |
OpenBookQA | OpenBookQA-3395 | thermodynamics, temperature
Layout
In the night, the outside temperature is lower compared to both Room, but since I live on top floor, the above slabs get heated and it starts radiating heat. I want to cool all my room. It seems like you want to transfer heat from Room 2 to Room 1, but you haven't mentioned the reaso... | [
"pour cold water on them",
"put ice in their pants",
"touch their sides with mine",
"let them sit outside in snow"
] | C | as heat is transferred from something to something else , the temperature of that something will decrease |
OpenBookQA | OpenBookQA-3396 | javascript, object-oriented, reinventing-the-wheel
const get = () => elements;
return {
push,
join,
get,
};
};
const myArray = Errey("3","blue","1","brown")
console.log(myArray.join(", "));
console.log(myArray.push("Subscribe", "To", "Him"));
console.log(myArray.get());
The followi... | [
"studying",
"dancing",
"singing",
"exherted effort"
] | D | pushing an object requires force |
OpenBookQA | OpenBookQA-3397 | 1-5 Intervention Activity 1-5 Ready to Go On? NO INTERVENE YES ENRICH N 1 2 P L M-4-3 2-1 012345-1. The value of b is 3. sides and the other with 1-in. Chapter 11. Some of the worksheets for this concept are Area of composite figures name answer key, Perimeter and area of composite figures, Area and perimeter of compos... | [
"the volume of the item",
"the color of the item",
"the luster of the item",
"the depth of the item"
] | A | the volume of an object can be used to describe the size of that object |
OpenBookQA | OpenBookQA-3398 | entomology
Title: Constantly wiggling moth pupa - will it emerge soon? Today I found a moth pupa in the soil in my garden in western Sweden. It's about 15 mm long.
I have found similar ones before, but this one is wiggling a lot more, even after I put it down and put a bit of dirt over it. It's been moving for more t... | [
"warmth",
"water",
"eggs",
"hard shells"
] | D | the cocoons being created occurs during the the pupa stage in a life cycle |
OpenBookQA | OpenBookQA-3399 | genetics, botany, senescence, telomere
Do Plants Get Cancer?
It seems to me the next obvious question. One of the first papers I came across (published in 1916 by the Journal of Cancer Research!) talks of Crown Gall in plants and its relation to human cancer (Smith, 1916). Many websites cite galls as being the equival... | [
"morph for continuation",
"boogie",
"bake cakes",
"take long naps"
] | A | changes in an environment cause plants to adapt to survive |
OpenBookQA | OpenBookQA-3400 | zoology, species-identification, ornithology, behaviour
Title: What is this crow eating, and is it a common part of the corvid diet? Here's a picture (by Rob Curtis) of a crow carrying and eating the corpse of what looks a bit like a small hawk or falcon:
Other pictures clearly show the crow is eating the dead bird. ... | [
"food charts",
"entertainment",
"enrichment",
"expectations"
] | C | a predator eats other animals for food |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.