Atmospheric Layers and Their Functions

Keshika presents an experiential learning activity on the layers of the atmosphere. The atmosphere is a protective layer of gases around Earth, consisting mainly of nitrogen and oxygen. It is divided into five layers: the troposphere, where weather occurs; the stratosphere, containing the ozone layer; the mesosphere, where meteors burn up; the thermosphere, home to auroras and radio wave reflection; and the exosphere, which transitions into space. Each layer has distinct characteristics and functions, contributing to Earth's climate and protection.

What percentage of the atmosphere is made up of nitrogen?

• 78%

• 21%

• 50%

• 1%

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

• Exosphere

• Troposphere

• Mesosphere

• Stratosphere

In which layer do most weather changes occur?

• Mesosphere

• Thermosphere

• Exosphere

• Troposphere

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

• Absorbs ultraviolet rays

• Prevents meteors

• Reflects radio waves

• Regulates temperature

Which layer is known for containing the coldest parts of the atmosphere?

• Mesosphere

• Stratosphere

• Exosphere

• Troposphere

What natural phenomena are observed in the thermosphere?

• Weather changes

• Cloud formation

• Auroras

• Meteor showers

Which layer of the atmosphere is also referred to as the ionosphere?

• Exosphere

• Stratosphere

• Troposphere

• Thermosphere

What is the role of the ionosphere in communication?

• Absorbs UV rays

• Reflects radio waves

• Prevents meteors

• Regulates temperature

Which layer of the atmosphere gradually fades into outer space?

• Troposphere

• Stratosphere

• Exosphere

• Mesosphere

Where are weather satellites primarily located?

• Stratosphere

• Mesosphere

• Exosphere

• Troposphere