The Solar System

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Across
  1. 2. the 4 quarters of the year, marked by an equinox or a solstice
  2. 5. repeating path that one object in space makes around another
  3. 8. the third closest planet to Sol (our planet, our sun)
  4. 14. rise and fall of ocean levels because of the gravitational pull of the moon and sun
  5. 15. the invisible force that pulls objects toward each other
  6. 17. planets orbiting a star (2 words)
  7. 18. time it takes to complete one orbit
  8. 19. large objects made of dust and ice that orbit the sun
Down
  1. 1. a small object in space
  2. 3. a small object that creates a streak of light as it strikes Earth's atmosphere
  3. 4. a chemical element that makes up about 80% of the Earth’s atmosphere
  4. 6. turns around an axis
  5. 7. a meteoroid that falls through the atmosphere and survives to strike Earth
  6. 9. one object in space moves between the earth and another object, blocking the view from Earth
  7. 10. changes in what we see from Earth when we look at the moon
  8. 11. a chemical element that makes up about 20% of the Earth’s atmosphere
  9. 12. a rocky object that orbits the sun and is too small to be a planet
  10. 13. the Earth’s natural satellite: a natural satellite of a planet
  11. 16. central body of our solar system