fact and question: strumming a string can cause that string to vibrate
Question: strumming a string can cause what type of wave?

What's the answer?

answer: Pressure

fact and question: coal is a nonrenewable resource
Question: Coal might start out as

What's the answer?

answer: pinecones

fact and question: a hot plate is a source of heat
Question: A person has a cup of coffee in a ceramic cup. The coffee inside of the cup has chilled, so to increase the temperature, the person

What's the answer?

answer: sets the cup on an electric dish

fact and question: shiny things reflect light
Question: What will reflect the most light

What's the answer?

answer:
silver spoon