B4 2021 Homsi

1. natural process; when greenhouse gases trap heat within the atmosphere.
3. farming and raising livestock which contributes to the release of methane and nitrous oxide.
5. the blanket around Earth which is separated into layers; it does things like moderate our temperatures and allow for weather.
7. gas form of water; a greenhouse gas which contributes to weather and climate.
9. second most abundant atmospheric gas (21%); breathed in by living things and is emitted by plants during photosynthesis.
10. its symbol is Ar; the least abundant atmospheric gas (1%).
11. bottom-most layer of the atmosphere; this is where weather occurs.
12. most abundant greenhouse gas (81%); enters atmosphere through the burning of things like fossil fuels.
14. hottest atmospheric temperatures! aurora borealis happens here.
16. the creation of certain products using factories and machines; contributes to the burning of fossil fuels.
17. most abundant atmospheric gas (78%)
18. process where plants take in carbon dioxide and emit oxygen.
20. a greenhouse gas that has the chemical formula of CH4; comes from livestock and farming.
21. a medium sized star which provides energy to the earth in the form of radiation; plays a huge role in the carbon cycle and greenhouse effect.

2. greenhouse gases that play a part in damaging the ozone layer; warm lower atmosphere of the Earth.
4. the warming of the Earth's atmosphere which can happen as a result of human impacts; can happen because of increased levels of CO2.
6. when solar energy is absorbed faster than it can be reflected out to space; like an overflowing bath tub.
8. the burning of these can produce carbon; includes goal and gas.
13. second layer of the atmosphere; contains ozone and temperature increases with altitude.
15. they trap heat within the atmosphere which allows the planet to be warm; includes CO2 and H2O.
19. coldest atmospheric temperatures! meteorites burn up here.