Question

Answer in brief.

Name the five layers of the atmosphere.

Answer 1

Atmosphere: It is a blanket of gases that surrounds Earth. It is held near the surface of the planet by Earth's gravitational attraction.

Five Layers of Atmosphere as under:

Troposphere:

1. It is considered the lowest layer of Earth’s atmosphere.
2. The troposphere starts at the surface of the earth and goes up from a height of 8 km (poles) to 18 km (equator). The main reason for higher height at the equator is the presence of hot convection currents that push the gases upward.
3. All kinds of weather changes occur within this layer.

Stratosphere:

1. It is the second layer of the atmosphere found above the troposphere.
2. It extends up to a height of 50 km from the earth’s surface.
3. This layer is very dry as it contains little water vapor.

Mesosphere:

1. The Mesosphere is found above the stratosphere.
2. It is the coldest of the atmospheric layers.
3. The mesosphere starts at 50 km above the surface of Earth and goes up to 80 km.
4. The temperature drops with altitude in this layer.

Thermosphere:

1. This layer is found above Mesopause from 80 to 400 km.
2. Radio waves that are transmitted from the earth are reflected by this layer.
3. The temperature starts increasing again with increasing height in this layer.
4. Aurora and satellites occur in this layer.

Exosphere:

1. It is the outermost layer of the atmosphere.
2. The zone where molecules and atoms escape into space is mentioned as the exosphere.
3. It extends from the top of the thermosphere up to 10,000 km.