Science Pop Quiz

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Across
  1. 2. Number of pairs of ribs a typical human have.
  2. 4. Only cat that doesn't roar.
  3. 5. The only metal that is liquid at room temperature.
  4. 6. Process where a substance goes directly from solid to gas without becoming liquid.
  5. 9. Tallest type of grass.
  6. 10. Largest artery in the human body.
  7. 11. Bees collect from flowers.
  8. 14. Number of legs a spider have.
  9. 15. Enzyme produced in the small intestines.
  10. 17. a close, long-term biological interaction between two organisms of different species.
  11. 18. Deadliest animal to humans.
  12. 21. Largest mammal in the world
  13. 22. Process in which plants lose water through tiny pores in their leaves.
  14. 24. Hardest natural substance on Earth.
  15. 25. Medical term for bad breath.
  16. 26. Enzyme responsible for unwinding the DNA double helix during replication.
  17. 27. Number of bones in a giraffe's neck.
  18. 28. Chemical name for rust
Down
  1. 1. Number of continents on Earth.
  2. 3. The phenomenon where light changes direction when it passes from one medium to another.
  3. 4. Relationship between organism where one benefit but the other neither benefit or harmed.
  4. 7. Study of Living things.
  5. 8. Largest desert on Earth.
  6. 9. Colour of a polar bear's skin.
  7. 12. Most electronegative element on the periodic table.
  8. 13. Protein in the blood that carries oxygen.
  9. 14. Process of a liquid turning into gas.
  10. 16. Centre of an atom.
  11. 19. Relationship between organism where one benefit and at the expense of the other.
  12. 20. Number of bones in a sharks body.
  13. 23. One of the four states of matter.