Weather and climate

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Across
  1. 8. carbon based energy sources such as coal, oil, and natural gas
  2. 13. dense air sinks, causing dry and clear weather
  3. 14. less dense air rises, causing wet and overcast weather
  4. 15. tectonic plates slide past each other, causing earthquakes
  5. 18. the process that moves carbon between the biosphere, hydrosphere, geosphere, and atmosphere
  6. 19. layer of the Earth that we live on
  7. 20. forms over land when a cool, dry high-pressure air mass collides with a warm low-pressure air mass
  8. 21. brings rainstorms and leaves humid, warm weather behind
Down
  1. 1. burning that releases carbon dioxide into the atmosphere
  2. 2. soaking in, or taking greenhouse gases out of the atmosphere
  3. 3. day-to-day conditions in the atmosphere
  4. 4. continuous movement of water between the ocean, atmosphere, and land
  5. 5. brings thunderstorms and leaves overcast and colder weather behind
  6. 6. the circular motion of liquids or gases caused by density differences in the wind in the atmosphere, ocean currents, and asthenosphere
  7. 7. gases being released into the atmosphere can result from deforestation, meteor impacts, and cellular respiration
  8. 9. ocean current that brings warm water from the equator
  9. 10. building or expanding cities to accommodate the increasing population
  10. 11. tropical cyclone that forms in areas of low pressure over warm tropical oceans
  11. 12. tectonic plates move toward each other, volcanic islands, and trenches
  12. 16. tectonic plates move away from each other, creating rifts and ridges
  13. 17. Fast narrow air current that blows from west to east