Aire

The video tutorial explains the concept of air as a mixture of gases surrounding Earth, highlighting its importance for life. It covers the composition of the atmosphere, including gases like nitrogen and oxygen, and the role of gravity in maintaining the atmosphere. The tutorial also describes the different layers of the atmosphere, such as the thermosphere and troposphere, and encourages reflection on why breathing is harder at higher altitudes.

What is air primarily composed of?

• A single type of gas

• A mixture of gases

• Only oxygen

• Only nitrogen

Which gas is NOT a major component of Earth's atmosphere?

• Argon

• Helium

• Oxygen

• Nitrogen

What force keeps Earth's atmosphere from drifting into space?

• Solar radiation

• Magnetism

• Wind

• Gravity

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

• Stratosphere

• Troposphere

• Mesosphere

• Thermosphere

Why is it more difficult to breathe at higher altitudes, such as on a mountain?

• The air is denser

• There is less oxygen

• The temperature is higher

• The air is more polluted