Describing Earth's Atmosphere

Describing Earth's Atmosphere

Multiple Choice

Air is composed of 21% of this element.

• Carbon Dioxide

• Nitrogen

• Oxygen

• Water Vapor

Multiple Choice

Air is composed of 78 % of this element.

• Carbon Dioxide
• Nitrogen
• Oxygen
• Water Vapor

Multiple Choice

Which of the following is NOT a solid particle in the atmosphere?

• salt
• soot
• dust, pollen
• CO₂

Multiple Choice

What causes meteors to "burn" up in the mesosphere?

• particles that make up meteors are flammable
• friction with the atmospheric air particles
• extreme temperature of the thermosphere
• they are made of metallic elements that react with atmospheric gases

Multiple Choice

Contains the ionosphere

• Troposphere

• Mesosphere

• Exosphere

• Thermosphere

Multiple Choice

Which atmospheric layer is the closest to Earth's surface?

• Stratosphere
• Troposphere
• Ionosphere
• Exosphere

Multiple Choice

What layer do planes fly in?

• Exposphere
• Troposphere
• Ozone
• Stratosphere

Multiple Choice

What layer of the atmosphere is the aurora located?

• Exosphere
• Thermosphere
• Stratosphere
• Mesosphere

Multiple Choice

The _______  in the Stratosphere protects us from harmful UV rays.

• aurora
• clouds
• convection currents
• ozone layer

Multiple Choice

Which layer of the atmosphere contains the ozone layer?

• troposphere

• stratosphere

• mesosphere

• thermosphere

Multiple Choice

As altitude increases, what happens to air pressure?

• increases
• remains constant
• decreases
• stays the same