Structure and Composition of the
Atmosphere Test Questions with
Actual Answers 2025-2026 Updated.
Which characteristic describes the troposphere?
-contains the ozone layer
-has the highest air pressure
-spans 12-50 km above Earth
-is a good place for planes to fly - Answer -has the highest air pressure
Which correctly lists three characteristics that are used to describe air?
-altitude, density, radiation
-density, radiation, mass
-mass, pressure, density
-pressure, altitude, radiation - Answer -mass, pressure, density
Which gas is most abundant in Earth's atmosphere?
-oxygen
-nitrogen
-water vapor
-carbon dioxide - Answer -nitrogen
Which is one way that Earth's atmosphere supports life?
-It filters out oxygen.
-It keeps Earth warm.
-It increases UV radiation.
-It provides a solid shield. - Answer -It keeps Earth warm.
The image shows a representation of mountains of various heights, numbered 1, 2, and 3. The
plain is labeled number 4.
Atmosphere Test Questions with
Actual Answers 2025-2026 Updated.
Which characteristic describes the troposphere?
-contains the ozone layer
-has the highest air pressure
-spans 12-50 km above Earth
-is a good place for planes to fly - Answer -has the highest air pressure
Which correctly lists three characteristics that are used to describe air?
-altitude, density, radiation
-density, radiation, mass
-mass, pressure, density
-pressure, altitude, radiation - Answer -mass, pressure, density
Which gas is most abundant in Earth's atmosphere?
-oxygen
-nitrogen
-water vapor
-carbon dioxide - Answer -nitrogen
Which is one way that Earth's atmosphere supports life?
-It filters out oxygen.
-It keeps Earth warm.
-It increases UV radiation.
-It provides a solid shield. - Answer -It keeps Earth warm.
The image shows a representation of mountains of various heights, numbered 1, 2, and 3. The
plain is labeled number 4.
