Across
- 1. a simple machine that consists of two rigidly attached disks or cylinders, each one with a different radius
- 4. thermal energy beneath Earth’s surface
- 6. the practice of finding ways to use less energy or to use energy more efficiently
- 8. a V-shaped object whose sides are two inclined planes sloped toward each other
- 11. an inclined plane wrapped around a cylinder
- 13. the ability to do work
- 14. the chemical energy stored in living things
- 17. the rate of doing work
- 18. the energy associated with the motion and position of everyday objects
- 19. a rigid bar that is free to move around a fixed point
- 20. a simple machine that consists of a rope that fits into a groove in a wheel
- 21. energy that is stored as a result of position or shape
- 22. the energy associated with electric charges
- 23. a slanted surface along which a force moves an object to a different elevation
- 25. energy obtained from flowing water
- 26. the process of changing energy from one form to another
- 27. a device that changes a force & helps you do work
- 28. potential energy that depends upon an object’s height above a reference point
- 29. the energy stored in atomic nuclei
Down
- 2. a source of energy that exists in limited quantities and, once used, cannot be replaced except over the course of millions of years
- 3. the potential energy of an object that is stretched or compressed
- 5. rich deposits of hydrocarbon mixtures that formed from the remains of organisms
- 7. a source of energy that can be replaced in a relatively short period of time
- 9. energy that travels in waves
- 10. sunlight that is converted into usable energy
- 12. the energy an object has due to its motion
- 15. the product of distance and the force in the direction an object moves
- 16. energy dealing with temperature
- 24. the energy stored in chemical bonds