Question

1. What is energy?

2. Which type of energy is stored in chemical compounds and released in chemical reactions?

3. What is the different between kinetic and potential energy?

4. Which type of energy, potential or kinetic, does a ball falling through the air have?

5. Which type of energy, potential or kinetic, does a roller coaster at the top of a hill have?

6. Which type of energy, potential or kinetic, is water held back by a dam?

7. Which type of energy, potential or kinetic, is a swinging pendulum?

8. When a car stops, the brakes heat up because of friction. What is this an example of?

9. How can the period of a pendulum be increased?

10. What makes a rubber band more elastic?

11. What happens to the force needed to stretch an elastic object?

12. According to the kinetic theory, what happens when ice melts?

13. What do we use to measure heat energy?

14. What causes conduction?

15. How do liquids and gases transfer heat?

16. What can avoid traveling through a solid, a liquid, or a gas?

17. What does a thermos do?

18. What can aluminum foil do that other substance can’t?

Answer 1

In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed.