Layers of the Atmosphere

What is the most abundant gas in the atmosphere?

• ozone
• nitrogen
• water vapor
• oxygen

What happens to air with increased altitude? (Example sand bucket you are on top of it)

• temperature increases
• pressure decreases
• pressure increases
• wind speed decreases

Which layer of the atmosphere protects Earth from meteoroids?

• mesosphere
• troposphere
• ionosphere
• stratosphere

What does atmo mean?

• Earth
• air
• heat
• water
• outside

What does thermo mean?

• Earth
• air
• heat
• water
• outside

What is the lowest layer of the Earth's atmosphere, closet to the Earth, we live here, and is the layer in which weather occurs?

• exosphere
• troposphere
• stratosphere
• ozone layer

The force that holds the Earth's atmosphere around Earth is?

• Aurora
• gravity
• density
• ozone layer

Why is the ozone layer vital to life on Earth?

• Planes fly in the ozone layer
• It is made up of oxygen (O2)
• It shields the Earth from ultraviolet (UV) rays from the sun
• It causes clouds to be created

Which layer of the atmosphere contains the ozone layer?

• troposphere

• stratosphere

• mesosphere

• thermosphere

What is the primary function of the mesosphere?

• Absorbing UV radiation

• Burning up meteoroids

• Hosting weather phenomena

• Reflecting radio waves