Context: sent1: water is a kind of liquid at room temperature sent2: mass is a property of objects sent3: as state of matter changes , mass will not change sent4: water is in the solid state , called ice sent5: ice is a kind of solid sent6: as a substance dissolves in water , the mass of the substance will stay the same sent7: stay the same means not changing sent8: as the heat of an object increases , the mass of the object will stay the same sent9: melting means substance changes from a solid into a liquid by increasing heat energy sent10: being on something; placed in something; placed over something means touching that something sent11: mass is a property of objects; matter sent12: water is in the solid state , called ice , for temperatures between 0; -459; -273 and 273; 32; 0 k; f; c sent13: mass is a property of matter sent14: as the temperature of something increases , the intensive properties of that something will not change sent15: as amount; size of something increases , the intensive properties of that something will not change sent16: liquid is a kind of state of matter sent17: the ice melts sent18: the intensive properties of a substance will stay the same sent19: temperature changing does not cause mass to change sent20: ice is a kind of solid sent21: melting means matter; a substance changes from a solid into a liquid by increasing heat energy sent22: phase changes do not change mass sent23: melting means a substance changes from a solid into a liquid by increasing heat energy sent24: liquid is a kind of state of matter sent25: water is a kind of liquid at room temperature

Question: A beaker containing 50 milliliters of ice is placed on a windowsill. After several hours, the ice melts. What property of the ice did not change when it melted?

Answer: the mass

Hypothesis: the mass of the ice will not change


Context: sent1: lightning occurs during lightning storms / thunderstorms sent2: water is in the solid state , called ice , for temperatures between -273 and 0 c sent3: water is a kind of liquid at room temperature sent4: a thunderstorm is a kind of storm sent5: water exists in liquid;solid;gas state on earth sent6: water is a kind of object sent7: water is a kind of object sent8: water is in the liquid state, called water sent9: solid is a kind of state of matter sent10: water is a kind of liquid at room temperature sent11: water is in the liquid state , called liquid water , for temperatures between 273; 32; 0 and 373; 212; 100 k; f; c sent12: hail is a kind of ice sent13: lightning occurs during lightning storms; thunderstorms sent14: precipitation is when rain;snow;hail fall from clouds to the earth;ground sent15: storm is a kind of weather; weather event sent16: water is in the solid state , called ice sent17: hail is a kind of precipitation; ice sent18: thunderstorm is a kind of severe weather sent19: hailing is when hail fall from clouds to the earth;ground sent20: water is in the solid state , called ice , for temperatures between 0; -459; -273 and 273; 32; 0 k; f; c sent21: a thunderstorm is a kind of storm sent22: hail is a kind of precipitation sent23: a storm is usually a source of strong winds sent24: water is a kind of liquid sent25: solid is a kind of state of matter

Question: Which of these describes water in a solid state?

Answer: Hail during a storm

Hypothesis: hail is water in solid ice


Context: sent1: metal is a kind of material sent2: solid is a kind of state of matter sent3: ice is a kind of solid sent4: objects are made of materials sent5: aluminum is a kind of metal sent6: a rock is usually a solid sent7: a rock is usually a solid sent8: aluminum is a kind of material sent9: water is in the solid state , called ice sent10: if an object is made of a material then that object has the properties of that material sent11: in common is similar to the same sent12: a metal is usually a solid at room temperature sent13: ice is a kind of object sent14: similar means in common sent15: rocks sometimes contain aluminum sent16: objects are made of materials; substances; matter sent17: if an object is made of a material then that object has the properties of that material sent18: aluminum is a kind of object sent19: water is in the solid state , called ice , for temperatures between 0; -459; -273 and 273; 32; 0 k; f; c sent20: ice is a kind of solid sent21: metals are made of metal sent22: a piece of something is a kind of object sent23: metal is a kind of material sent24: ice is a kind of object sent25: solid is a kind of state of matter

Question: What do ice, a rock, and a piece of aluminum have in common?

Answer: They are all solids.

Hypothesis: ice, a rock, and a piece of aluminum are all solids


Context: sent1: where something comes from is a source of that something sent2: plants are the source of spices sent3: an object; material; substance comes from that object or material's source sent4: a plant is a kind of organism sent5: plants are a source of fibers sent6: one can get something from a source sent7: paper is a kind of material sent8: plants are a source of spices sent9: if something comes from something else then that something else is a source of that something sent10: a tree is a kind of plant sent11: trees are a source of paper sent12: spices are a kind of material sent13: if something is a raw material then that something comes directly from a source sent14: spice is a kind of food sent15: if something is a source of something else then that something else comes from that something sent16: a plant is a kind of living thing sent17: one can get something from a source sent18: a plant is a kind of living thing sent19: a tree is a kind of plant sent20: fiber is a kind of material sent21: green plant is a kind of plant sent22: a plant is a kind of organism sent23: plants are a kind of organism sent24: if something comes from something else then that something else is a source of that something sent25: something comes from a source of that something

Question: Which of these lists has only products that come from plants?

Answer: Paper, spices, and fibers

Hypothesis: paper, spices, and fibers are products of plants

trees are a source of paper
plants are a source of fibers
plants are the source of spices


Context: sent1: electricity is a kind of electrical energy sent2: electrical energy is a kind of energy sent3: if two or more things are in a relationship then those things impact each other sent4: a class of something means a type of something sent5: a type is synonymous with a kind sent6: a scientist is a kind of human sent7: researcher is a kind of scientist sent8: a relationship occurs when two or more things interact with one another sent9: a simple machine requires mechanical energy to function sent10: a screw is a kind of simple machine sent11: to study means to examine sent12: a physicist studies energy sent13: scientists make observations sent14: a complex machine is made of more than one simple machine sent15: a screw is a kind of simple machine sent16: studying is similar to investigating sent17: mechanical energy is a kind of energy sent18: mechanical energy is a kind of energy sent19: if a tool is made of a simple machine then that tool uses the principle demonstrated in that simple machine sent20: electrical energy is a kind of energy sent21: a machine is a kind of device sent22: a simple machine is a kind of tool sent23: a physicist is a kind of scientist sent24: an electrical device can be a part of a machine sent25: a machine is a kind of object

Question: Which type of scientist would study the relationship between simple machines and energy?

Answer: physicist

Hypothesis: a physicist is the scientist who study the relationship between simple machines and energy


Context: sent1: something that has a positive impact on something else is a kind of benefit sent2: good means positive sent3: if something has a positive impact on something else then that something is good for that something else sent4: an airplane is a kind of vehicle sent5: beneficial means helpful sent6: high speed means fast sent7: advantage has a positive impact on something sent8: having a positive impact on something helps that something sent9: negative impact is the opposite of positive impact sent10: fast means quickly sent11: a airplane is used for moving people; products across bodies of water; to far away places sent12: faster means an increase; higher in speed sent13: if something increases something else then that something has a positive impact on that something else sent14: rapidly means quickly sent15: moving fast is similar to travelling quickly sent16: high is similar to increase sent17: negative impact is the opposite of positive impact sent18: a positive impact is a benefit sent19: faster means an increase in speed sent20: to help; to benefit means to be of use sent21: if something has a positive impact on something else then that something helps that something else sent22: helping something has a positive impact on that something sent23: a positive impact is a helpful effect sent24: flying is a kind of motion through air; space sent25: an airplane is fast in speed

Question: Which fact is a benefit of airplanes?

Answer: Airplanes can travel very quickly.

Hypothesis: an airplane can help people travel quickly

some word synonymy relations you might need to know to answer this question are:


Context: sent1: person is synonymous with human sent2: to help; to benefit means to be of use sent3: length of time means period of time sent4: appliance is similar to technology sent5: a refrigerator is a kind of appliance sent6: if something; an invention; a discovery is invented; discovered then that something; that invention; that discovery can be used sent7: a tool is a kind of invention sent8: a refrigerator is used for keeping food fresh for a long period of time sent9: a human is a kind of animal sent10: technology is similar to tool sent11: a human is a kind of animal sent12: to preserve food means to keep fresh food from spoiling sent13: a human is a kind of organism sent14: keeping food cold is used for keeping food fresh sent15: a person is a kind of animal sent16: to help means to aid sent17: an invention is a kind of tool sent18: a person is a kind of living thing sent19: a freezer; refrigerator is cool; cold in temperature sent20: helping something has a positive impact on that something sent21: humans are a kind of organism sent22: to be used for something means to help to do that something sent23: helping something has a positive impact on that something sent24: if something / an invention / a discovery is invented / discovered then that something / that invention / that discovery can be used sent25: a human is a kind of living thing

Question: Which invention has technology that helps people keep food fresh for a long period of time?

Answer: refrigerator

Hypothesis: refrigerator is the invention that can keep food fresh for a long period of time