Across
- 4. the layer in the atmosphere closest to us, gets colder as you go up, most weather happens here
- 5. second most abundant gas in the atmosphere, needed to breathe
- 6. a byproduct of producing oxygen and nitrogen
- 7. what has happened to the amount of greenhouse gases
- 11. examples include coal, natural gas. when burned, it releases gases that speed up global warming.
- 16. a type of air pollution, caused by burning fossil fuels. commonly seen in air over big cities.
- 18. the "good" ozone above the troposphere that soaks up UV rays
- 19. what happens when iceburgs melt, an effect of global warming
- 20. airplane pilots like to fly here because there's not much turbulence, the ozone layer is here, gets hotter as you go up because the ozone is absorbing UV rays
- 21. the gas that is makes up most of the trace gases, the gas that humans breathe out after taking in oxygen, is released when things are burned,increases in the winted because of plant respiration
- 22. place where meteors burn up, colder as you go up because of the thermosphere above it
- 25. is caused by CFCs,bad because more UV rays can reach humans, which can cause skin cancer
Down
- 1. when the greenhouse effect speeds up like it is doing now and is causing harm because there's too much heat in the atmosphere
- 2. greenhouse gases act like these to trap in the heat like in a greenhouse
- 3. all the other gases that isn't nitrogen, oxygen,or argon
- 8. the opposite of photosynthesis
- 9. when the average temperature of the earth rises. effects include rising sea levels.
- 10. most abundant gas in the atmosphere
- 12. the layer of atmosphere furthest away from the earth, auora borealis is here, soaks up gamma and x-rays from the sun
- 13. causes the planet to heat up, direct source of energy
- 14. CH4,comes from actual living things, like cows,created when things are rotting,0.4% of trace gases are methane
- 15. unnatural gases that can destroy ozone in the stratosphere, used for cleaning and refrigirators, there was a campaign to stop their production, was successful
- 17. when heat is trapped in the atmosphere like a greenhouse.
- 23. water but in gas form.
- 24. the second element in the periodic table,makes your voice sound funny when you breathe it in