The Solar System Quiz Vocabulary Review

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Across
  1. 3. The force that caused materials from a supernova to coalesce into our solar system objects.
  2. 4. A ________ is formed when a meteoroid enters our atmosphere. Most burn up before reaching Earth.
  3. 7. The most famous comet passes about once every 76 years is named after the astronomer named _______.
  4. 8. - The four outer gas giant planets are called the _________ planets.
  5. 10. - These are very large rocks in space.(Greater than 100m)
  6. 11. The asteroid _______ is found between Mars and Jupiter.
Down
  1. 1. - The four inner planets are called the ______ planets.
  2. 2. - These are rocks in space less than 100m.
  3. 5. - Balls of ice that travel through space with very long, elliptical orbits.
  4. 6. - When a comet gets closer to the ___,its tail gets longer and it becomes more visible.
  5. 9. The chances of a major asteroid crashing into the Earth during your lifetime and creating mass destruction is almost ____.