SOL Review - Space

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Across
  1. 2. Two factors that affect the gravitational attraction between objects are mass & ___.
  2. 4. Planets ___ around the sun.
  3. 6. A force that keeps the planets in motion around the sun.
  4. 10. Earth's surface is ___ and partly covered with large oceans.
  5. 12. The outer, " ___" planets are very large.
  6. 15. The greek astronomer who developed a model of the universe with Earth at the center.
  7. 16. Second planet from the sun
  8. 17. The atmosphere and the ___ ___ help shield Earth's surface from harmful solar radiation.
  9. 19. Earth's atmosphere consists mostly of oxygen and ___ .
  10. 21. The ___ ___ separates the inner planets from the outer planets.
  11. 23. Third planet from the sun
  12. 24. What season do we experience when the Northern Hemisphere is tilted towards the sun?
Down
  1. 1. The gravitational pull of the moon causes the ____.
  2. 3. The sun, moon,Earth, other planets and their moons, meteors, asteroids, and comets make up the ___ ___.
  3. 5. Farthest planet from the sun
  4. 7. The ___ of Earth on its axis as it revolves around the sun causes the seasons.
  5. 8. Astronomer whose model of the universe placed the Sun rather than the Earth at the center.
  6. 9. His invention of the telescope provided more evidence that the planets circled the sun.
  7. 10. A planet ___ upon an axis.
  8. 11. Pluto is a ___ planet because it cannot move other objects away from its orbital neighborhood.
  9. 13. Largest planet
  10. 14. The ____ of the moon are caused by its position relative to Earth and the sun.
  11. 18. The phase of the moon that occurs when the Earth is between the Sun & the Moon.
  12. 20. ___ is the smallest planet and the closet planet to the sun.
  13. 22. The four ____ planets are comparatively small and rocky.