3rd Grade Energy: Heat and Light

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Across
  1. 2. When a fire burns, you can see the light and _____ the warmth it produces.
  2. 5. Sources of light are also sources of heat. Right or wrong?
  3. 6. Light is the only form of energy the sun radiates. True or nope?
  4. 10. ______ is one way heat is transferred. Radiated heat warms the objects it reaches.
  5. 13. A ______ is the place from which something begins.
  6. 14. Light ______, or spreads outward, from the object that gives it off.
  7. 15. Not all heat comes from the sun. When energy changes form, some energy is always given off in the form of _____.
  8. 16. Light ______, or bounces off objects.
  9. 18. _____ energy is changed to light and heat, like when you turn on a lamp.
Down
  1. 1. Refracted light ______ direction.
  2. 3. ______ colored objects reflect light.
  3. 4. An object ______, or takes in, some of the light that hits it.
  4. 5. When light hits certain objects, it ______, or bends.
  5. 7. When light hits an object, the object absorbs some of the light's energy. The object's ______ energy increases.
  6. 8. A dark rock sitting in the sun will feel warmer than a light rock. True or nope?
  7. 9. Burning logs in a fire radiate light _____.
  8. 11. ______ colored objects absorb light.
  9. 12. A ______ change is happening as logs burn in a fire. These kinds of changes can also produce light and heat, like electrical changes.
  10. 16. Other forms of radiated energy are ______ waves, microwaves, infrared waves and x-rays.
  11. 17. A ______ pond or mirror reflect light better than other kinds of objects.