B2 2020 Makenova

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Across
  1. 4. a set of layers of gases surrounding Earth and protecting us from getting overheated
  2. 7. result of human activity making our planet warmer
  3. 8. Highest pressure at sea level
  4. 10. most important greenhouse gas emitted by humans, but several other gases contribute to climate change, too
  5. 13. trap heat in the atmosphere, which makes the Earth warmer
  6. 14. formula for carbon dioxide
  7. 17. ozone layer protects from uv radiation
  8. 18. man-made gases that can stay in the atmosphere for centuries and contribute to a global greenhouse effect
  9. 21. increasing co2 in the atmosphere by cutting down trees
  10. 23. formula for methane
  11. 24. formula for water vapor
  12. 25. a natural process that warms the Earth's surface be reflecting sun’s energy
Down
  1. 1. occurs when a planet's atmosphere contains greenhouse gas in an amount sufficient to block thermal radiation from the planet, preventing the planet from cooling and from having liquid water on its surface.
  2. 2. a gas produced both through natural sources and human activities, including agriculture
  3. 3. (burning of this) is one of the global warming reasons
  4. 5. chemicals destroying the ozone layer
  5. 6. created by chemical reactions between oxides of nitrogen and volatile organic compounds
  6. 9. change of Earth’s climate due to human activities
  7. 11. increase of human population mankind the climate change even worse
  8. 12. meteorites burn up
  9. 15. Gamma rays and x rays absorbed
  10. 16. consists of a mixture of solid and liquid particles suspended in the atmosphere varying in composition, source and size
  11. 19. angreenhouse gas produced by the use of fertilizers, nitric acid production, and biomass burning.
  12. 20. gaseous phase of water that is part of atmospheric gases
  13. 22. protects living things from ultraviolet radiation from the sun