Solve the Crossword!

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Across
  1. 3. Energy we can see
  2. 7. The transfer of heat in liquids
  3. 10. Sound that is reflected and bounces back
  4. 11. Animals that have a backbone
  5. 12. The intensity of sound waves
  6. 13. Animals that eat both plants and meat
  7. 14. Animals that do not have a backbone
Down
  1. 1. Animals that only eat plants
  2. 2. Animals that only eat meat
  3. 4. A tool we use to measure temperature
  4. 5. The process by which plants make food using sunlight
  5. 6. The transfer of heat in solids
  6. 8. The hotness or coldness of an object
  7. 9. The transfer of heat in air