8th Grade Science State Assessment Review

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Across
  1. 7. The slow process of breaking rocks down into smaller pieces
  2. 9. An "Effect" where gases trap heat, keeping Earth warm
  3. 10. Having many different types of species in one ecosystem
  4. 11. The invisible force that keeps planets in orbit around the Sun
  5. 12. The sum of all forces acting on an object
  6. 14. The ecosystem's recycler, like a mushroom or bacteria
  7. 16. A chemical reaction that feels hot because it releases energy
  8. 18. The green "solar panels" in plant cells that perform photosynthesis
  9. 19. Why a straw looks "broken" in a glass of water; the bending of light
  10. 20. The "letter" combination of alleles an organism carries
  11. 22. When one tectonic plate slides under another and sinks
  12. 24. The type of rock most likely to contain fossils
  13. 25. Stored energy, often "gravitational" when an object is high up
  14. 27. An object’s tendency to keep doing what it’s doing (thanks, Newton!)
  15. 28. An area of land where all water drains into a single body of water
  16. 29. The physical trait you actually see (like blue eyes)
  17. 30. A long-term relationship where at least one species benefits
Down
  1. 1. The height of a wave; in sound, this determines how loud it is
  2. 2. The energy an object has because it is in motion
  3. 3. An underground layer of rock or sand that stores groundwater
  4. 4. The "goldilocks" state; maintaining a stable internal environment
  5. 5. Calculated by dividing mass by volume
  6. 6. What you get when two or more atoms are chemically bonded together
  7. 8. The number of wave cycles that pass a point per second
  8. 13. The theory that Earth's outer shell is divided into moving plates
  9. 15. A random "typo" in a DNA sequence that can lead to new traits
  10. 17. The cell's power plant where cellular respiration happens
  11. 21. When one celestial body moves into the shadow of another
  12. 23. An energy source that doesn't run out, like wind or solar.
  13. 26. Survival of the fittest; the mechanism behind evolution