Structure of atmosphere class 7th

Two gases that make up 99% of Earth's atmosphere

• carbon dioxide & oxygen

• nitrogen & carbon dioxide

• nitrogen & oxygen

• nitrogen & water vapour

Layer of Earth's atmosphere where most of the water vapor and carbon dioxide is found

• thermosphere
• mesosphere
• stratosphere
• troposphere

Layer of Earth's atmosphere where weather occurs

• thermosphere
• mesosphere
• stratosphere
• troposphere

Uppermost layer of Earth's atmosphere

• thermosphere
• mesosphere
• stratosphere
• troposphere

This gas makes up 21% of the atmosphere

• ozone
• oxygen
• nitrogen
• water vapor

What is the hottest layer in the atmosphere?

• Ionosphere
• Stratosphere
• Thermosphere
• Mesosphere

What layer is the Ozone in?

• Ozone Layer

• Stratosphere

• Troposphere

• It's not in one, it has its own

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

• Troposphere
• Ozone Layer
• Exosphere
• Stratosphere

This gas makes up 78% of the atmosphere

• oxygen
• nitrogen
• ozone
• carbon dioxide

Which of the following is the correct order of the atmosphere layers from Earth to space?

• troposphere, stratosphere, mesosphere, thermosphere, exosphere
• troposphere, mesosphere, thermosphere, exosphere, stratosphere
• thermosphere, stratosphere, mesosphere, troposphere, exosphere
• troposphere, stratosphere, mesosphere, exosphere, thermosphere