അന്തരീക്ഷത്തിന്റെ അഞ്ച് പാളികൾ

Video narration

Imagine you are standing inside your school building, looking up from the ground floor. Above you are more floors, each with its own place and purpose. Now picture Earth surrounded by a much bigger building: the atmosphere, a blanket of gases around our planet. It is not empty sky. It has five layers, arranged from Earth outward: the troposphere, where most weather happens; the stratosphere, home of the ozone layer; the mesosphere, where many meteors burn up; the thermosphere, an extremely hot layer; and the exosphere, the outermost layer, gradually blending into space. These are not hard walls like floors in a real school building. They are changing regions of gas. But the building idea helps you remember the order and each layer's job. Together, these five levels make our atmosphere, and each does its own work to protect Earth.