Chapter 15

3. energy - thermal energy beneath Earth’s surface
5. energy - energy obtained from flowing water
6. potential energy - the potential energy of an object that is stretched or compressed
8. energy resource - a source of energy that exists in limited quantities and, once used, cannot be replaced except over the course of millions of years
9. potential energy - potential energy that depends upon an object’s height above a reference point
14. - the ability to do work
15. energy - the energy associated with the motion and position of everyday objects
16. conservation - the practice of finding ways to use less energy or to use energy more efficiently
17. energy - the energy associated with electric charges
19. fuels - rich deposits of hydrocarbon mixtures that formed from the remains of organisms

1. energy - the energy stored in atomic nuclei
2. energy - energy that is stored as a result of position or shape
4. energy - the energy an object has due to its motion
7. energy - sunlight that is converted into usable energy
10. energy resource - a source of energy that can be replaced in a relatively short period of time
11. energy - the chemical energy stored in living things
12. energy - the energy stored in chemical bonds
13. conversion - the process of changing energy from one form to another
16. energy - a form of energy consisting of changing electric and magnetic fields
18. energy - the total potential and kinetic energy of all the particles in an object