fact and question: oil is a source of gasoline
Question: which one of these would be an original form of what powers most autos?

What's the answer?

answer: a deposit of crude

fact and question: a hot plate is a source of heat
Question: Which would likely need a hot plate?

What's the answer?

answer: chemistry class

fact and question: adding heat to an object sometimes causes chemical reactions
Question: If a thing reacts in a situation, the most likely reason for the chemical reaction is

What's the answer?

answer: upper temps are applied slowly

fact and question: metal is a thermal conductor
Question: If a person wants to move heat quickly, they could use the sun's warmth. The best thing for absorbing it would be

What's the answer?

answer:
a brass sheet