Ch. 2, Lesson 1

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Across
  1. 1. made up of icy dust particles and frozen gases, they look like bright balls with long, feathery tails
  2. 3. number of planets known to orbit the sun in our solar system
  3. 5. made up of the hydrosphere, lithosphere, and atmosphere
  4. 6. small round bodies that orbit the sun but are too small to be considered planets (two words)
  5. 9. ocean containing the deepest known depression on earth
  6. 10. the largest of the inner planets of the solar system
Down
  1. 2. number of continents on earth
  2. 4. small, irregularly shaped, planet-like objects found mainly between Mars and Jupiter
  3. 7. continent where both the highest and lowest land points on Earth can be found
  4. 8. gas that composes 78% of earth's atmosphere