| A | B |
|---|
| atmosphere | the invisible mass of air surrounding Earth |
| nitrogen and oxygen | two gases found the most in the atmosphere |
| air pressure | the pressure air exerts down upon an object |
| troposphere | lowest layer of atmosphere where weather occurs |
| statosphere | has the ozone which blocks UV rays |
| mesophere | layer of the atmosphere where meteors burn up |
| thermosphere | fourth layer of the atmosphere |
| exosphere | outer layer of the atmosphere |
| greenhouse effect | the process by which gases from the atmosphere trap heat |
| Why Earth supports life | water, temperature, our atmosphere |
| wind | caused by rising, heated air and falling cooler air |
| weather | what is happening right now in the atmosphere |
| climate | the weather of a region over a long period of time |
| Polar Zone | coldest climate zone on Earth |
| Temperate Zone | Earth's climate Zone which has seasons |
| Tropical Zone | climate zone found near the equator, warm year-round |
| global warming | the gradual increase in the overall temperature of Earth's atmosphere |
| emissions | gases produced which pollute the atmosphere |
| Ways to prevent climate change | carpool, drive less, use less electricity, reduce, reuse, recycle |
