Term
| Which gases made up Earth's earliest atmosphere? |
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Definition
| mostly methane and Ammonia |
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Term
| How can the composition of Earth's atmosphere change over time? |
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Definition
natural changes- photosynthesis, respiration, decomposition
unnatural changes- caused by living things..pollution((industry, burning fossil fuels)) |
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Term
| How much of today's atmosphere is made of Nitrogen? |
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Definition
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Term
| How much of today's atmosphere is made up of Oxygen? |
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Definition
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Term
| How much of today's atmosphere is made of Carbon Dioxide? |
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Definition
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Term
| How much Argon is there in today's atmosphere? |
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Definition
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Term
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Definition
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Term
| List some of our atmosphere's "trace gases". |
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Definition
| Ozone, Methane, Ammonia, Xenon, Hydrogen, Helium |
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Term
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Definition
| Nitrogen compounds used by plants to make protein. |
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Term
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Definition
| Nitrogen compounds used in cell growth and repair. |
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Term
| Describe the Nitrogen Cycle. |
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Definition
| Constant movement of N from the air, the soil, to living things, and back to air of soil. |
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Term
| What is the Greenhouse Effect? |
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Definition
| Gases in the atmosphere trap heat near the surface of a planet. |
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Term
| Which gas is most responsible to the Greenhouse Effect? |
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Definition
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Term
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Definition
| a form of oxygen.. ((O3)) |
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Term
| How is Ozone beneficial to humans? |
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Definition
| absorbs ultra violet radiation ((u-v rays)) before they reach the surface. |
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Term
| What is happening to the Ozone in our atmosphere? |
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Definition
| Little by little it is getting thinner and thinner. We already have a hole in it above Antarctica. |
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Term
| What is our "atmosphere"? |
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Definition
| Contains all of the gases necessary for the continued survival of the living creatures of this wonderful world. |
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Term
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Definition
| Bacterial breakdown of organic material. |
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Term
| What are the Nitrogen-fixing bacteria? Why are they useful? |
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Definition
| Bacteria in the soil. It is able to change the atmospheric Nitrogen into a more useable form, called Nitrates. These Nitrates are used by the plants to make proteins. |
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Term
| Describe the Oxygen/ Carbon Dioxide Cycle. |
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Definition
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Term
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Definition
| The process used by some living things to obtain energy by "burning" food in the presence of atmospheric oxygen. |
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Term
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Definition
| Uses carbon dioxide to produce long chains of carbon atoms used as food by living creatures. |
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Term
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Definition
| The process known as "burning", where fuel is combined with heat and oxygen to make a fire. |
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Term
| What causes Global Warming? |
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Definition
| An increase in carbon dioxide. |
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Term
| How do humans affect the Greenhouse Effect? |
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Definition
| The widespread burning of fossil fuels (which releases CO2 into the atmosphere), combined with the systematic destruction of our rain forests, oceanic phytoplankton and local woodlands and grasslands, all combine to cause global carbon dioxide levels to climb steadily higher and higher. |
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Term
| What do humans do that most affects the levels of Ozone in our atmosphere? |
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Definition
| We use chemicals that eat the ozone before it has a chance to absorb UV rays. |
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Term
| How is ozone made in nature? |
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Definition
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Term
| List the layers in our atmosphere. |
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Definition
| Troposphere, Stratusphere, Mesosphere, Ionosphere, and Exosphere. |
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Term
| Briefly describe each layer of our atmosphere. |
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Definition
Troposphere- Over 50% of the air is here. +22 to -55 degrees celsius.
Stratosphere- -55 to 0 degrees.
Mesosphere- Coldest layer.0 to -100 degrees
Ionosphere- Contains "Ions"- atoms with an electrical charge. A-100 to +2000 degrees.
Exosphere- + 2000 to - 300 degrees. |
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Term
| Where does weather occur? |
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Definition
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Term
| In which layer of the atmosphere do you live? |
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Definition
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Term
| Where is the "Ozone Layer" located. |
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Definition
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Term
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Definition
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Term
| Which layer of the atmoshpere helps to protect us from meteorites? |
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Definition
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Term
| In which layer of our atmoshpere do we see the Auroras? |
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Definition
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Term
| Which layer of the atmosphere cna be used in radio communications? |
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Definition
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Term
| In which layer of the atmosphere do artificial satellites oribit? |
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Definition
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Term
| Why do meteorites begin to burn up in the Mesosphere? |
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Definition
| As the meteorite falls through our atmosphere, it bumps into air molecules. In the mesosphere, these air molecules are finally close enough together to cause the meteorite first to get warm, then to burn, then eventually to melt away entirely. |
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Term
| Why do artificial satellites orbit in the exosphere? |
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Definition
| They would be ruined by any other layer. It is close enough for them to held in place by gravity but far enough away not to burn. |
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Term
| At what altitudes are the various layers of the atmosphere located? |
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Definition
Troposphere- 0-16 km
Stratosphere- 16-50 km
Mesosphere- 50-80 km
Ionosphere- 80-550 km
Exosphere- 550-1000 km |
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