Chap 14+15

2. energy the chemical energy stored in living things
6. the ability to do work
7. plane a slanted surface along which a force moves an object to a different elevation
8. an inclined plane wrapped around a cylinder
10. energy resource a source of energy that can be replaced in a relatively short period of time
13. fuels rich deposits of hydrocarbon mixtures that formed from the remains of organisms
18. conversion the process of changing energy from one form to another
20. a rigid bar that is free to move around a fixed point
21. and axle a simple machine that consists of two rigidly attached disks or cylinders, each one with a different radius
22. energy energy that travels in waves
24. conservation the practice of finding ways to use less energy or to use energy more efficiently
25. energy thermal energy beneath Earth’s surface
27. potential energy potential energy that depends upon an object’s height above a reference point
28. energy the energy stored in chemical bonds
29. energy the energy an object has due to its motion

1. energy the energy stored in atomic nuclei
3. a device that changes a force & helps you do work
4. 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
5. a V-shaped object whose sides are two inclined planes sloped toward each other
9. energy the energy associated with the motion and position of everyday objects
11. potential energy the potential energy of an object that is stretched or compressed
12. energy energy that is stored as a result of position or shape
14. energy sunlight that is converted into usable energy
15. energy the energy associated with electric charges
16. energy energy obtained from flowing water
17. a simple machine that consists of a rope that fits into a groove in a wheel
19. energy energy dealing with temperature
23. the product of distance and the force in the direction an object moves
26. the rate of doing work