Weather quiz review (support)

Which layer of the atmosphere do we live in?

• Troposphere

• Mesosphere

• Thermosphere

• Stratosphere

In which atmosphere layer does weather occur?

• Exosphere

• Troposphere

• Mesosphere

• Stratosphere

Which elemental gas makes up around 80% of the Earth's atmosphere?

• Hydrogen

• Nitrogen

• Oxygen

• Helium

The hottest layer of the atmosphere:

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

Why is it difficult to breathe at higher altitudes?

• There is less oxygen as altitude increases.

• There is a larger amount of carbon dioxide as altitude increases.

• Gases in the atmosphere become thinner as altitude increases.

• It is difficult to breathe cold air.

The mixture of gases that surrounds Earth is the ______________.

• atmosphere

• stratosphere

Why is Earth's atmosphere important?

• It prevents pollution from happening.
• Life on Earth could not exist without it.

Uppermost layer of Earth's atmosphere

• thermosphere
• mesosphere
• stratosphere
• troposphere

What is the hottest layer in the atmosphere?

• Ionosphere
• Stratosphere
• Thermosphere
• Mesosphere

The _____ protects us from the harmful UV rays of the sun.

• Troposphere
• Ozone Layer
• Exosphere
• Stratosphere