Problem: Write a question you would see in a school textbook.

Answer: Beans and coal both have stored energy. Where did the energy come from that is stored in beans and coal?

Problem: Write a question you would see in a school textbook.

Answer: Which of the following keeps the planets in our solar system in orbit around the Sun?

Problem: Write a question you would see in a school textbook.

Answer:
Which rapid changes are caused by heat from inside Earth?