Atmosphere

The video explains the atmosphere as a layer of gases surrounding Earth, held by gravity, essential for life by trapping heat and forming weather. It introduces the greenhouse effect and the ozone layer's protective role. The atmosphere's composition is mainly nitrogen and oxygen, crucial for life. It is divided into layers: troposphere, stratosphere, mesosphere, and thermosphere, each with distinct characteristics.

What is the primary function of the atmosphere in relation to the sun's heat?

• It reflects all the sun's heat back into space.

• It absorbs and traps heat, keeping Earth warm.

• It cools down the Earth's surface by blocking sunlight.

• It allows all the sun's heat to escape into space.

Which layer of the atmosphere is crucial for protecting Earth from harmful solar radiation?

• Mesosphere

• Ozone layer

• Stratosphere

• Troposphere

What are the two main gases that make up the Earth's atmosphere?

• Oxygen and Carbon Dioxide

• Nitrogen and Oxygen

• Hydrogen and Helium

• Argon and Methane

In which layer of the atmosphere do we live and experience weather?

• Stratosphere

• Mesosphere

• Troposphere

• Thermosphere

Why do planes typically fly in the stratosphere?

• Because it has the highest concentration of oxygen.

• Because it is usually calm and free of weather disturbances.

• Because it is the warmest layer of the atmosphere.

• Because it is the closest layer to space.