Can We Cool the Planet?

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Across
  1. 1. a layer of the atmosphere 20 kilometers (12 miles) above the planet’s surface.
  2. 5. Others focus on reducing how much solar radiation.
  3. 8. atoms as building blocks to grow and release oxygen back into the air
  4. 9. Burning coal, oil, and natural gas for energy releases carbon dioxide
  5. 14. Krankatoa erupted violently spewing hot ash and gases into earths upper atmosphere.
  6. 16. calculated by averaging the temperatures over the sea
  7. 17. The outside of the building contains rows of large fans
  8. 18. energy releases carbon dioxide (CO2) and other greenhouse gases into the air.
Down
  1. 2. Energy that comes from a source and travels through space at the speed of light
  2. 3. the sun reaches Earth
  3. 4. Krakatoa erupted violently, spewUnderground rock formationso Earth’s upper atmosphere
  4. 6. like solar and wind power
  5. 7. Warming temperatures on Earth are already causing sea levels to rise and intensifying extreme weather, like heat waves and hurricanes.
  6. 10. are developing technology to suck it directly out of the air.
  7. 11. The process by which green plants and some other organism use sunlight to food from carbon dioxide and water
  8. 12. These gases act like a blanket, trapping heat from the sun in Earth’s atmosphere.renewable energy like solar and wind power
  9. 13. Tiny particles of sulfuric acid from the eruption spread around the planet, blocking sunlight and lowering temperatures for about a year.
  10. 15. ntentionally altering the environment, to cool the planet.