Our Solar System

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Across
  1. 2. The largest planet in our solar system is ___.
  2. 4. Earth has an ____ surface that is constantly changing.
  3. 7. The moon has ___ temperatures, which are very hot and very cold.
  4. 8. The first quarter moon has light on the ____ side.
  5. 11. The sun is made mostly of ___ gas.
  6. 14. The first and last quarter moons cause ___ tides.
  7. 15. Earth's revolution on its tilted axis causes the ___.
  8. 16. The last quarter moon has light on the ____ side.
Down
  1. 1. The full and new moons cause ___ tides.
  2. 3. The inner planets are made mostly of ____.
  3. 5. The four planets closest to the sun are called the _____ planets.
  4. 6. The smallest planet in our solar system is ___.
  5. 8. We know now that all of the gas giants have ____.
  6. 9. The four planets farthest of the sun are made mostly of ____.
  7. 10. The ____ is a satellite of Earth.
  8. 12. When Earth ____, it causes day and night.
  9. 13. The ___ of the moon and sun affect the tides.