Atmosphere Study Guide

Which gas in our atmosphere is most abundant?

• Argon
• Oxygen
• Nitrogen
• Carbon Dioxide

Clouds in the stratosphere produce more rain than in the troposphere.

• True
• False

The air in the troposphere has a greater density than the air in any other layer of the atmosphere.

• True

• False

Temperature in the stratosphere warms as altitude increases.

• True
• False

Temperature decreases as altitude increases in the Thermosphere.

• True
• False

What percentage of our atmosphere is made up of other gases such as argon, water vapor, and carbon dioxide?

• 1%
• 21%
• 78%
• 90%

What is the percentage of oxygen in Earth's atmosphere?

• 1%
• 21%
• 78%
• 90%

What is the percentage of nitrogen in Earth's atmosphere?

• 1%
• 21%
• 78%
• 90%

A planet can be suitable for animals if it has 4.2% of Oxygen.

• True
• False

Which layer of the atmosphere contains the greatest amount of water vapor?

• Thermosphere
• Troposphere
• Mesosphere
• Stratosphere