The video explains the importance of Earth's atmosphere, its composition, and its layers. It highlights how the atmosphere supports life, protects from radiation, and enables sound travel. The video also explains why the sky is blue and discusses atmospheric pressure variations with altitude.

Which gas is most abundant in Earth's atmosphere?

• Carbon Dioxide

• Argon

• Nitrogen

• Oxygen

What is the primary function of the ozone layer in the stratosphere?

• To burn up meteors

• To create weather patterns

• To absorb ultraviolet radiation

• To produce oxygen

In which layer of the atmosphere do most weather phenomena occur?

• Stratosphere

• Thermosphere

• Mesosphere

• Troposphere

Why is the sky blue during the day?

• Because of the presence of ozone

• Because of the reflection of the ocean

• Due to the absorption of red light

• Due to the scattering of blue light by atmospheric molecules

What happens to atmospheric pressure as altitude increases?

• It fluctuates randomly

• It increases

• It remains constant

• It decreases