What is Atmosphere?

Atmosphere means the air around us.

The atmosphere is a blanket of air that surrounds our Earth.
It protects us, gives us oxygen to breathe, and keeps Earth warm.

👉 Atmosphere = the layer of air around Earth

Layers of the Atmosphere (with height)

From the ground up, the atmosphere has 5 main layers:

1. Troposphere (0 – 12 km)

• This is the lowest layer
• We live here
• All weather (rain, clouds, wind) happens here

2. Stratosphere (12 – 50 km)

• Contains the ozone layer
• The ozone layer protects us from harmful sunlight
• Airplanes fly here sometimes

3. Mesosphere (50 – 85 km)

• This is the coldest layer
• Meteors (shooting stars) burn here

4. Thermosphere (85 – 600 km)

• Very hot layer
• Satellites move here
• Northern lights happen here

5. Exosphere (600 km and above)

• The outermost layer
• It slowly fades into space

 Easy Way to Remember

👉 T S M T E
(Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere)