Chapters 7 & 8

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Across
  1. 1. Olympus Mons can be found on which planet (pg 137)?
  2. 4. This element absorbs energy, leading to supernovas (pg 124).
  3. 6. No more than 1% of the atoms in any region of the universe can be _________ (pg 120).
  4. 8. Which element has 1 proton in its nucleus (pg 117)?
  5. 9. How many naturally occurring elements were manufactured in the Big Bang (pg 115)?
  6. 11. Which element is the second most abundant element in the universe (pg 118)?
  7. 12. Flattened spheres are referred to as __________ spheroids (pg 141).
  8. 14. What is the largest and most perfect sphere (pg 145)?
  9. 15. What is the name of Saturn’s largest moon (pg 123)?
Down
  1. 2. What element occupies nearly 10% of Earth’s crust (pg 122)?
  2. 3. Small icy objects are found here (pg 131).
  3. 5. Which 3d shape is seen most commonly throughout the universe (pg 134)?
  4. 7. ___________is the force that collapses matter into all directions (pg 136).
  5. 10. Which planet takes 10.5 hours to rotate (pg 141)?
  6. 11. This is the name of the Greek sun god (pg 119).
  7. 13. An area with chunks of rock and metal that were once believed to be planets (pg 129).