Exploring the Layers of Earth's Atmosphere

What analogy is used to explain the concept of air on Earth?

• A sandwich

• A pizza

• A pie

• A cake

What percentage of the air is made up of oxygen?

• 21%

• 20%

• 10%

• 77%

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

• Nitrogen

• Argon

• Carbon Dioxide

• Oxygen

What is the topmost layer of the atmosphere called?

• Thermosphere

• Troposphere

• Mesosphere

• Stratosphere

In which layer do satellites fly?

• Mesosphere

• Troposphere

• Stratosphere

• Thermosphere

Where do hot air balloons typically fly?

• Troposphere

• Thermosphere

• Stratosphere

• Mesosphere

Which layer of the atmosphere is closest to the Earth's surface?

• Thermosphere

• Stratosphere

• Troposphere

• Mesosphere

Where do airplanes typically fly?

• Mesosphere

• Stratosphere

• Thermosphere

• Troposphere

How does air pressure change as you go higher in the atmosphere?

• It stays the same

• It decreases

• It increases

• It fluctuates

Why does heavier air settle at the bottom of the atmosphere?

• Because it is denser

• Because it is less dense

• Because it is lighter

• Because it is warmer