Across
- 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
Down
- 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