| A | B |
|---|
| biosphere | all living thing on earth |
| atmosphere | the gases surrounding the planet |
| trace gases | make up 1% of earth's atmosphere argon, CO2, water vapor |
| oxygen | 21% of earths atmosphere |
| nitrogyn | 78% of earth atmosphere |
| exosphere | the outer most layer of the atmosphere satellites are found here |
| Ionosphere | an area of the atmosphere mainly in the thermosphere that has a high concentration of ions |
| Thermosphere | the 4th and the hottest layer of earth's atmosphere |
| Mesosphere | the middle or third layer of the atmosphere that is that coldest |
| Stratosphere | the second layer which includes the ozone layer |
| Troposphere | the layer we live in that gets colder the higher the altitude and all weather is present here |
| Ozone layer | a layer of ozone in the stratosphere that blocks out harmful Ultraviolet light from the sun |
| Hydrosphere | All the water present in or on earth |
| Cryosphere | Water that is frozen in large sheets known as glacier, ice cap, and iceburgs |
| Geosphere | the solid part of earth starting at the crust and moving into the inner core |
| greenhouse effect | is where the suns rays are allowed to pass through to the earth but when it reflects back out to space most is stopped and held in your atmosphere |
| air pressure | decreases when altitude increases |
| Atmosphere breakdown | life on the planet will no longer exist increase skin cancer, meteor impacts, or freezing to death |
