Grade 7 Energy Review

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Across
  1. 3. Energy from flowing water used to generate electricity.
  2. 4. A change from one form of energy to another.
  3. 7. Energy transferred by electromagnetic waves.
  4. 8. A common insulating material in winter clothing.
  5. 14. The main energy change in a toaster.
  6. 17. Liquids and gases are classified as this.
  7. 18. Thermal energy depends on this.
  8. 21. The main energy change in a solar panel.
  9. 23. Energy carried by moving electric charges.
  10. 26. Stored energy due to position or condition.
  11. 29. The starting energy in a battery-powered toy.
  12. 31. The motion energy at the bottom of a hill.
  13. 32. Energy spreading into the environment as unusable heat.
  14. 33. Energy carried by sunlight.
  15. 34. Energy stored in a stretched or compressed object.
  16. 35. A good conductor of heat.
  17. 36. Heat transfer through direct contact.
  18. 39. Materials that slow heat transfer.
  19. 40. Energy from moving air.
  20. 44. A diagram showing energy inputs and outputs.
  21. 47. Circular movement of warm and cool fluids.
  22. 48. The useful output of a flashlight.
  23. 49. Energy from the sun.
  24. 50. Unintended energy produced by friction.
Down
  1. 1. The natural direction of heat flow.
  2. 2. Energy due to an object’s height.
  3. 5. The law stating energy cannot be created or destroyed.
  4. 6. Energy produced by vibrations.
  5. 9. Heat transfer that does not require matter.
  6. 10. The ability to cause change or do work.
  7. 11. Energy source that can be naturally replaced quickly.
  8. 12. Coal, oil, and natural gas are examples of these.
  9. 13. Energy of motion.
  10. 15. Total kinetic energy of particles in a substance.
  11. 16. Transfer of thermal energy between objects.
  12. 19. Energy lost as sound or heat in machinery.
  13. 20. The energy that goes into a system.
  14. 22. The main energy change in a speaker.
  15. 24. Energy source that forms over millions of years.
  16. 25. The transfer of energy by particle collision.
  17. 27. Energy from heat inside the Earth.
  18. 28. The stored energy at the top of a roller coaster.
  19. 30. Heat always moves from warmer to ______ objects.
  20. 37. Energy stored in chemical bonds.
  21. 38. Energy that combines kinetic and potential energy.
  22. 41. The energy that comes out of a system.
  23. 42. Materials that allow heat to move easily.
  24. 43. Energy from moving water turning turbines.
  25. 45. Heat transfer through movement of fluids.
  26. 46. Measure of average kinetic energy of particles.