Science Crossword Puzzle

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Across
  1. 2. What part of the skeletal system protects the brain?
  2. 3. when you push something you apply?
  3. 4. highest mountain on Earth
  4. 8. the 7th planet of our solar system
  5. 10. What are animals, which eat both plants and animals, called?
  6. 13. what are clouds made up of
  7. 14. Which is the closest planet to the sun?
  8. 15. study of stars and solar systems
  9. 16. what part of the plant conducts photosynthesis?
  10. 17. a metal that is liquid at room temperature
Down
  1. 1. which is the largest land animal?
  2. 3. Yeast is a type of ____?
  3. 5. inventor of lightbulb
  4. 6. Biggest planet of our solar system
  5. 7. name of our galaxy
  6. 9. Where does our food collect after we chew and swallow it?
  7. 10. name of an organ that pumps blood
  8. 11. the invisible line that divides the globe in half
  9. 12. smallest unit of matter
  10. 17. earths only natural satellite