5.6 Vocabulary

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Across
  1. 3. A curved piece of glass or plastic that bends light rays.
  2. 7. A device that allows electric circuits to be turned "off" or "on".
  3. 9. When light rays are bounced back off of an object, such as a mirror.
  4. 10. Energy from heat.
  5. 12. When an object lets all light pass through it and is see through.
  6. 13. The energy that is sensed with the ears and travels in vibrations.
  7. 14. The path through which electrical energy flows.
  8. 15. To send out energy, material, or a substance.
  9. 17. The energy that travels in straight lines and we can sense with our eyes.
  10. 18. A clear piece of glass or plastic that can refract and reflect light.
Down
  1. 1. A material that easily lets energy pass through it.
  2. 2. When an object lets some light through, but is not see through.
  3. 4. The energy of motion or moving parts.
  4. 5. When light rays are bent as they pass through materials such as glass or water.
  5. 6. A material that does not let energy pass through it easily.
  6. 8. The flow of electricity.
  7. 11. To soak in energy or a substance.
  8. 16. Anything that lets energy travel through it.