The picture below shows interactions between Earth systems. How many spheres are interacting in the picture?

Sometimes fires burn down large areas of forests that are part of the biosphere. Other than the biosphere, which of Earth’s other systems is a forest fire most likely to affect?

The picture below shows a view of the layers of the geosphere. About how thick is Earth’s mantle?

The Florida Everglades is a large, warm wetland with many plants, animals, and microscopic organisms. Which part of the Earth system includes the water in the Everglades?

When trees die, they often fall on the ground and decompose. Which part of the Earth system includes dead and decomposed trees?

The Florida panther is one of the most endangered mammals on Earth. Where is the air that Florida panthers breathe?

The picture below shows the interaction of different spheres within the Earth system. Which parts are interacting?

The picture below shows parts of the Earth system.

Which of these sentences best describes an interaction of spheres shown in the picture?

The following map shows the average elevations of four U.S. state capitals.

What city would you expect to have the greatest air pressure?

The names and molecular structures of four atmospheric gases are shown in the following figures. Each gas constitutes a different percentage of Earth’s atmosphere. Which gas is most abundant in Earth’s atmosphere?

Air is in constant motion. As air rises higher into the atmosphere, what happens to the air pressure as the elevation increases?

The atmosphere is divided into four layers, the mesosphere, troposphere, thermosphere, and stratosphere. Each layer has unique physical properties. Which of the following is true of the stratosphere?

The following diagram shows the four layers of the atmosphere.

Which layer is responsible for shielding Earth from ultraviolet radiation?

The atmosphere is an important part of what makes Earth livable. Refer to the following circle graph to answer the following question.

The graph shows the relative abundance of gases in Earth’s atmosphere. Which gas corresponds to label A in the figure?

Look at the following image of a greenhouse. A greenhouse is a building where plants are cultivated. It traps some of the incoming solar radiation and, therefore, becomes warmer than the surrounding environment.

Which gas acts similarly to this greenhouse in its effect on the atmosphere?

An ozone molecule is shown in the following figure. It is made up of three oxygen atoms chemically bonded.

Which layer of the atmosphere would contain the most of this molecule?