Layers of the atmosphere

​Atmosphere

Multiple Choice

What is air pressure?

• The force exerted by the weight of air molecules on a surface.
• The amount of oxygen in the air
• The temperature of the air
• The speed at which air moves

Multiple Choice

Why is the sky blue?

• The sky is blue because of the reflection of the blue mountains.
• The sky is blue because of the reflection of the Earth's blue oceans.
• The sky appears blue due to the scattering of sunlight by the Earth's atmosphere.
• The sky is blue because it reflects the color of the ocean.

​High levels of oxygen created extremely large bugs.

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Oxygen did not level out until 1.85 mya.

Paying attention now?

Multiple Choice

What is the most abundant gas in the atmosphere?

• helium
• oxygen
• nitrogen
• carbon dioxide

The atmosphere can be separated into several layers.

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The Layers

​These layers to be specific

Troposphere

Stratosphere

​The first layer is the Troposphere.

• as you increase in altitude, temp decreases

• weather occurs here

​The second layer is the Stratosphere.

• Temp remains stable for 20 km, then rises with altitude

• Highest skydive happened here

• Contains the ozone

​The ozone block UV radiation from the sun.

Multiple Choice

What is a characteristic of the troposphere?

• It is a layer of the Earth's mantle.
• It is a layer of the Earth's crust.
• It is the lowest layer of the Earth's atmosphere where weather occurs.
• It is the highest layer of the Earth's atmosphere where weather occurs.

Multiple Choice

What is the function of the ozone?

• To create a protective layer around the Earth's atmosphere
• To protect the Earth from harmful UV radiation
• To absorb carbon dioxide and reduce global warming
• To trap heat and warm the Earth's surface

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​The third layer is the Mesosphere.

• as you increase in altitude, you decrease in temperature.

• Meteors are seen here.

Ions from solar wind crash into atoms of oxygen and nitrogen in the ionosphere. This creates the Aurora Borealis (Northern Lights).

The ionosphere is also found here.

• Still contains a little bit of ionosphere.

• Also contains the magnetosphere.

​The next layer is the Thermosphere

​The magnetosphere blocks gamma and UV rays from the Sun.

​This is the very outermost edge of our atmosphere. It is the boundary between us and the rest of space.

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Finally, the Exosphere.

Multiple Select

In what layer of the atmosphere are the Northern Lights found?

• Stratosphere
• Mesosphere
• Troposphere
• Thermosphere

Multiple Choice

What layer of the atmosphere do we see meteors?

• Exosphere
• Stratosphere
• Troposphere
• Mesosphere

Multiple Choice

What is air pressure?

• The force exerted by the weight of air molecules on a surface.
• The amount of oxygen in the air
• The temperature of the air
• The speed at which air moves

Multiple Choice

What two gases is the atmosphere primarily made of?

• carbon dioxide and helium
• hydrogen and argon
• methane and neon
• nitrogen and oxygen

Multiple Choice

Why were prehistoric arthropods so large?

• They had access to better food sources
• They evolved to be larger to intimidate predators
• They were genetically engineered by ancient civilizations
• Higher oxygen levels in the atmosphere

Multiple Choice

What is the only gas in the atmosphere that can change its phase of matter?

• water vapor
• carbon dioxide
• oxygen
• nitrogen

Multiple Choice

What is the most powerful greenhouse gas in the atmosphere?

• Carbon dioxide (CO2)
• Methane (CH4)
• Water (H₂O)

• Sulfur hexafluoride (SF6)

Multiple Choice

What is the function of the magnetosphere?

• To regulate the Earth's temperature
• To protect the Earth from the solar wind
• To cause earthquakes
• To attract meteorites to Earth