Cpt.8 Crossword

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Across
  1. 4. what shrinks under weak gravity
  2. 7. how many years was the accretion period
  3. 8. sent an electrical charge through a flask of a chemical solution of methane, ammonia, hydrogen and water
  4. 10. stars are made of
  5. 11. what is the process of planets forming
  6. 14. what type of element sank to earths core
  7. 16. what type of object can give us information about the conditions in which planes are formed
  8. 17. inner material is concentrated into a
  9. 18. what process formed the first clouds
  10. 19. how many years did the heavy rain fall
  11. 20. earths iron core creates a magnetic field which protects the planet from
  12. 21. what provides us with tides
  13. 22. this can be compared to a spinning ice skater
  14. 23. stars give of what
  15. 24. what holds the planets in orbit
Down
  1. 1. what is the name of the most advanced telescope used today
  2. 2. how many years from now until the sun will turn into a red giant
  3. 3. what protects us from UV rays
  4. 5. this is responsible for the formation of Earths gravitational field
  5. 6. how many years ago was The Big Bang
  6. 9. the first organisms on Earth were similar to
  7. 12. what is the name of our planet
  8. 13. the Sun is classified as what
  9. 15. what is it called when a star explodes
  10. 19. what year did Stanley Miller conduct his experiment
  11. 21. our galaxy is known as what