Earth As A System Crossword

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Across
  1. 5. The layer of the atmosphere where weather occurs and people live
  2. 6. The atmospheric layer above the troposphere that contains the ozone layer
  3. 8. All of the living things on earth
  4. 10. All the solid rock, mountains, soil, and molten interior layers on earth
  5. 11. The gas that makes up 21 percent of the atmosphere
  6. 13. The coldest part of the atmosphere and where meteors burn up
  7. 14. The layer of the atmosphere where auroras occur
  8. 15. The gas that makes up 78 percent of the atmosphere
Down
  1. 1. A blanket of gases that surrounds earth
  2. 2. This type of system only exchanges energy
  3. 3. What exists outside of the system’s boundaries
  4. 4. All the water on Earth in liquid, solid, and gas forms
  5. 7. The outer boundary of earth’s system
  6. 9. The capacity to move, give off heat, light, or sound
  7. 12. A group of different parts that work together as a single connected unit to do a specific job
  8. 13. Includes solids, liquids, and gases