Science

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Across
  1. 2. A tool used to see faraway objects in space
  2. 6. A space object with a tail of gas and dust
  3. 8. The smallest unit of matter
  4. 9. A mountain that can erupt with lava
  5. 10. The process of gas changing into liquid
  6. 13. The smallest planet in our solar system
  7. 14. The framework of bones inside the body
  8. 15. The natural home of an animal or plant
Down
  1. 1. A force that slows things down when they rub together
  2. 3. Process plants use to make food from sunlight
  3. 4. Type of animal that has hair or fur and feeds milk to its young
  4. 5. The process of liquid water turning into gas
  5. 7. A measure of how hot or cold something is
  6. 11. Gas that humans need to breathe
  7. 12. The force that pulls objects toward Earth