grade 6

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Across
  1. 4. Process where plants lose water through leaves
  2. 6. Energy of a moving objec
  3. 9. Positive particle in an atom
  4. 10. Center of an atom
  5. 11. Force that opposes motion between surfaces
  6. 14. Gas plants release in photosynthesis
  7. 15. Animals without backbones
Down
  1. 1. Force that keeps planets in orbit
  2. 2. Molten rock inside Earth
  3. 3. Process that separates mixtures using evaporation
  4. 5. Basic unit of life
  5. 7. Rock formed from cooled lava
  6. 8. Energy stored due to position
  7. 12. Heat transfer through direct contact
  8. 13. Organ that pumps blood