Q: How many layers does the atmosphere have?

Flexi Says: Earth’s atmosphere is divided into five major layers. The layers are based on temperature.

• The troposphere is the lowest layer. Temperature decreases with altitude in this layer. All weather takes place here.
• The stratosphere is the layer above the troposphere. Temperature increases with altitude in this layer. The ozone layer occurs here.
• The mesosphere is the layer above the stratosphere. Temperature decreases with altitude in this layer. Meteors burn up here.
• The thermosphere is the layer above the mesosphere. Temperature increases with altitude in this layer. The northern and southern lights occur here.
• The exosphere is the highest layer. Air molecules are very far apart. They may escape Earth’s gravity and float into space.