Earth’s Atmosphere - Unit Test LearnEd

How are gas molecules distributed throughout the layers of Earth’s atmosphere?

• The majority of gases can be found in the exosphere.

• The majority of gas molecules can be found in the troposphere.

• The main portion of gas molecules can be found in the thermosphere.

• The largest concentration of gas molecules are found in the ozone layer.

In which layer of the atmosphere does temperature decrease with altitude?

• Troposphere

• Stratosphere

• Hydrosphere

• Thermosphere

Why do humans measure air pressure?

• To determine how fast the wind will be moving.

• To determine the distribution of water molecules in the air.

• To predict how the air pressure will affect the weather.

• To predict how much water vapor is currently in the atmosphere.

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How does the water cycle transfer water from the atmosphere to the lithosphere?

• Infiltration

• Precipitation

• Transpiration

• Condensation

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How does the decomposition of organic matter affect the distribution of gases in the atmosphere?

• It uses carbon dioxide to create glucose.

• It releases nitrogen and carbon dioxide into the atmosphere.

• It absorbs carbon dioxide and nitrogen out of the atmosphere.

• It requires oxygen to break apart glucose in order to release energy.

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Why does the temperature in the stratosphere increase with altitude?

• Gas molecules react with solar radiation and produce auroras.

• Ozone molecules absorb ultraviolet radiation and release heat.

• Satellites orbiting release energy and the atmosphere absorbs it.

• Meteors burn up and the atmosphere absorbs the heat released.

How does the ionosphere affect the temperature in the thermosphere?

• Satellites stir up gas molecules keeping temperatures low.

• Ozone molecules absorb ultraviolet radiation and produce heat.

• Gas molecules reacting with solar radiation produce light and heat.

• Meteors absorb heat as they pass through and decrease temperatures.

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Which place on Earth would have higher air pressure?

• Charlotte, NC

• Death Valley

• Myrtle Beach, SC

• Mount Everest

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How does air pressure change throughout Earth’s atmospheric layers?

• Decreases with increasing altitude.

• Increases with increasing water vapor.

• Decrease with decreasing air temperature.

• Increases with decreasing gas molecule amounts.

Why is the water cycle a continuous process?

• The steps do not stop repeating.

• The steps pause during the night.

• The steps hibernate during the winter.

• The steps repeat while the sun is shining.

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