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

Answer: Earth rotates on its north-south axis. Which statement best describes one complete rotation?

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

Answer: A device that converts light energy into electricity used in many handheld calculators is a

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

Answer:
Which unit can be used to describe an object's length?