Composition of the Atmosphere

Front

Which gas makes up the greatest percentage of Earth's atmosphere?

Back

Nitrogen

Front

A certain element makes up 78 percent of Earth's atmosphere. It interacts with other elements to provide many of the nutrients needed in an ecosystem. What is the name of this element?

Back

Nitrogen

Front

In the nitrogen cycle, where is nitrogen found as an element?

Back

in the air

Front

Which gas makes up the majority of the Earth's atmosphere?

Back

Nitrogen

Front

Which gas present in the atmosphere of Mars is the primary gas found in the atmosphere of Earth?

Back

Nitrogen

Front

Which gas composes 21% of the atmosphere?

Back

Oxygen

Front

The majority of the troposphere (the layer of the atmosphere that is closest to Earth) consists of which two gases?

Back

Nitrogen and oxygen

Front

When a plane flies, it travels through air that contains gases, liquids, and solids. This area is BEST described as the

Back

atmosphere.

Front

Which of these gases, on average, has the lowest volume in the atmosphere of Earth? Oxygen, Nitrogen, Water vapor, Carbon dioxide

Back

Carbon dioxide

Front

The table shows the volume percentages of four samples of atmospheric gas. Which sample BEST represents the composition of Earth's atmosphere?

Back

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