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Atmosphere
Atmosphere Test Review
| Question | Answer |
|---|---|
| What is atmosphere made of? | contains gases (oxygen), solids (dust, pollen, salt), and liquids (water vapor) |
| Why is atmosphere important? | creates perfect balance of heat on Earth for living things to survive; Also protects life forms from Sun's harmful rays |
| What organism first released Oxygen into the atmosphere ? | cyanobacteria living in the ocean |
| What is the percentage of Nitrogen in the atmosphere? | 78% |
| What is the percentage of Oxygen in the atmosphere? | 21% |
| What is the percentage of Trace Gases in the atmosphere? | 1% |
| How are we changing the atmosphere? | releasing CFC's (chloroflourocarbons) and CO2 (carbon dioxide) into the atmosphere |
| Why should we limit the amount of CO2 released into the atmosphere? | it is the #1 greenhouse gas (causes global warming) |
| Why are CFC's bad for the atmosphere? | break down Ozone layer |
| How is atmospheric pressure (air pressure) related to altitude? | higher altitude = lower air pressure |
| What tool is used to measure air pressure? | barometer |
| How are layers of the atmosphere defined? | abrupt changes in temperature due to solar energy absorption (each layer absorbs different amounts of heat) |
| What is the innermost layer of the atmosphere (closest to the surface of Earth)? | Troposphere |
| In which layer of the atmosphere is weather located? | Troposphere |
| In which layer is the Ozone layer found? | Stratosphere |
| In which layer of the atmosphere do airplanes fly? | Stratosphere |
| In which layer is the Ionosphere found and where meteroids start to burn? | Mesosphere |
| In which layer of the atmosphere is the international space station found? | Thermosphere |
| Which is the outermost layer of the atmosphere? (also considered "space") | Exosphere |
| What part of the atmosphere protects us from ultraviolet radiation? | Ozone Layer |
| What is Radiation? | energy/heat transfered through rays/waves (Think "RAYdiation) (holding hands close to fire to warm them) |
| What is conduction? | energy/heat transfered when molecules bump into one another (touch) (burner warming a pot) |
| what is Convection? | energy/heat transfered through the flow of material (boiling water---cooler water sinks, hot water rises) |
| Why does warm air rise? | molecules move apart making air less dense and "lighter" |
| Why does cold air sink? | molecules are close together, more molecules in given area making the air "heavier" |
Created by:
ebegley
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