fact and question: measuring the hardness of minerals requires scratching those materials
Question: Hardness of minerals may be measured in certain ways, such as what?

What's the answer?

answer: applying pressure using a sharp, tough object in order to leave marks

fact and question: matter vibrating can cause sound
Question: Steve's ears alerted him to something. It was

What's the answer?

answer: waves in the air

fact and question: fossil fuels are formed by dead organisms over time
Question: What is oil likely comprised of?

What's the answer?

answer: brontosaurus

fact and question: the sun is located directly overhead at noon
Question: At what time would a person feel the most heat outside?

What's the answer?

answer:
noon