Earth's Atmosphere

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Across
  1. 2. gas in Earth's atmosphere that absorbs UV radiation
  2. 5. layer of atmosphere located above the stratosphere, typically where meteoroids burn up
  3. 7. direct transfer of heat energy
  4. 10. atmospheric layer closest to Earth's surface, where we breathe and where weather occurs
  5. 11. simple plants that contain chlorophyll but do not have true roots, leaves, or stems
  6. 14. typical weather patterns observed over many years in a given location
  7. 16. gas that makes up 21% of Earth's atmosphere
  8. 18. greenhouse gas from respiration and burning organic matter
  9. 19. a layer of gases surrounding a planet or other body, held in place by gravity
  10. 20. outer layer of Earth's atmosphere that contains helium, hydrogen, radioactive particles, and bands of radiation
  11. 21. movement of energy from Sun to other parts of Earth
Down
  1. 1. blue-green algae, introduced oxygen into earth's atmosphere
  2. 3. transfer of heat energy through fluids
  3. 4. process that plants use to make food
  4. 6. change over time
  5. 8. energy from the Sun
  6. 9. incoming solar radiation, reaches Earth from the Sun
  7. 12. gases absorb infrared radiation from the Earth’s surface and prevent it from escaping back to space, forming a “heat blanket” around Earth
  8. 13. atmospheric layer above mesosphere
  9. 15. energy transmitted as rays or waves through space, without a substance
  10. 17. gas that makes up 78% of Earth's atmosphere