Chapters 14 & 15

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Across
  1. 2. energy - the chemical energy stored in living things
  2. 6. - the ability to do work
  3. 7. plane - a slanted surface along which a force moves an object to a different elevation
  4. 8. - an inclined plane wrapped around a cylinder
  5. 10. energy resource - a source of energy that can be replaced in a relatively short period of time
  6. 13. fuels - rich deposits of hydrocarbon mixtures that formed from the remains of organisms
  7. 18. conversion - the process of changing energy from one form to another
  8. 20. - a rigid bar that is free to move around a fixed point
  9. 21. and axle - a simple machine that consists of two rigidly attached disks or cylinders, each one with a different radius
  10. 22. energy - energy that travels in waves
  11. 24. conservation - the practice of finding ways to use less energy or to use energy more efficiently
  12. 25. energy - thermal energy beneath Earth’s surface
  13. 27. potential energy - potential energy that depends upon an object’s height above a reference point
  14. 28. energy - the energy stored in chemical bonds
  15. 29. energy - the energy an object has due to its motion
Down
  1. 1. energy - the energy stored in atomic nuclei
  2. 3. - a device that changes a force & helps you do work
  3. 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
  4. 5. - a V-shaped object whose sides are two inclined planes sloped toward each other
  5. 9. energy - the energy associated with the motion and position of everyday objects
  6. 11. potential energy - the potential energy of an object that is stretched or compressed
  7. 12. energy - energy that is stored as a result of position or shape
  8. 14. energy - sunlight that is converted into usable energy
  9. 15. energy - the energy associated with electric charges
  10. 16. energy - energy obtained from flowing water
  11. 17. - a simple machine that consists of a rope that fits into a groove in a wheel
  12. 19. energy - energy dealing with temperature
  13. 23. - the product of distance and the force in the direction an object moves
  14. 26. - the rate of doing work