Term
| Combination of Earth's motions and energy from the sun. |
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Definition
| What produces a variety of weather? |
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Term
| Climate is based on observations of weather that have been collected over many years.Climate helps describe a place or region. |
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Definition
| What is climate based on? |
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Term
| Air is a mixture of different gases and particles each with its own physical properties.The composition of air varies from time to time and from place to place. |
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Definition
| What is air a mixture of? |
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Term
| Nitrogen and oxygen make up 99 percent of the volume of clean, dry air. |
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Definition
| What two gases make up 99 percent of dry air? |
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Term
| Carbon dioxide is an active absorber of energy given off by Earth.Therefore, it plays a significant role in heating the atmosphere. |
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Definition
| What gas plays significant role in heating the atmosphere? |
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Term
| Water vapor is the source of all clouds and precipitation.Like carbon dioxide, water vapor absorbs heat given off by Earth.It also absorbs some solar energy. |
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Definition
| What is the source of all clouds and precipitation? |
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Term
| Sea salts from breaking waves,fine soil blown into the air, smoke and soot from fires, pollen & microorganisms lifted by the wind, & ash & dust from volcanic eruptions. |
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Definition
| What are some particles that remain suspended for long periods of time? |
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Term
| They split when they absorb ultraviolet radiation emitted from the sun. |
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Definition
| When do oxygen atoms split into single atoms of oxygen? |
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Term
| Ozone absorbs harmful UV radiation from the sun.Our planet would be uninhabitable for many living organisms if ozone wasn't there. |
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Definition
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Term
| Emissions from transportation vehicles. |
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Definition
| What accounts for nearly half the primary pollutants by weight? |
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Term
| They are not emitted directly into the air.They form in the atmosphere when reactions take place among primary pollutants and other substances. |
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Definition
| What are secondary pollutants? |
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Term
| Reactions triggered by strong sunlight. |
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Definition
| What are photochemical reactions? |
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Term
| Atmospheric pressure is simply the weight of the air above. |
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Definition
| What is atmospheric pressure? |
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Term
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Definition
| How many layers is the atmosphere divided into? |
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Term
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Definition
| In what layer do most weather phenomena occur? |
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Term
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Definition
| Where does most energy that drives weather and climate come from? |
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Term
| It is the unequal heating of the Earth that creates winds and drives the ocean currents.These movements transport heat from the tropics toward the poles in an attempt to balance energy differences.The results of these processes are the phenomena we call weather. |
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Definition
| What creates winds and dives the ocean's currents? |
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Term
Revolution is the spinning of Earth about its axis.The axis is an imaginary line running through the north and south poles.Our planet rotates once every 24 hours, producing the daily cycle of daylight and darkness.
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Definition
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Term
| Revolution is the movement of Earth in its orbit around the sun. Earth travels at nearly 113,000 kilometers per hour in an elliptical orbit about the sun. |
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Definition
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Definition
What are the degrees the Earth is tilted?
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