Earth's Atmosphere

The thin layer of gases surrounding Earth is called:

• hydrosphere
• geosphere
• atmosphere
• cryosphere

T/F: Earth's EARLY atmosphere was mainly water vapor with a little carbon dioxide and nitrogen

• True
• False

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

• Oxygen
• Nitrogen
• Carbon dioxide
• Water Vapor

Which layer of the atmosphere does weather occur in?

• Thermosphere
• Mesosphere
• Stratosphere
• Troposphere

Which layer of the atmosphere contains the ozone layer?

• Thermosphere
• Mesosphere
• Stratosphere
• Troposphere

Which layer of the atmosphere do the Auroras(northern and southern lights) occur in?

• Ionosphere
• Mesosphere
• Stratosphere
• Troposphere

Which layer of the atmosphere do meteors burn up in?

• Exosphere
• Mesosphere
• Stratosphere
• Troposphere

As altitude increases, air pressure...

• increases
• decreases
• stays the same

In the troposphere, as altitude increases, temperature...

• increases
• decreases
• stays the same

The height of an object or point in relation to sea level is...

• distance
• height
• altitude
• degrees