Question

Write a short note on the atmosphere.

Answer 1

• The atmosphere is one of the most important components of Earth's interrelated physical systems.
• The layers of gases that surround a planet or other celestial body are known as an atmosphere.
• The atmosphere of the Earth is made up of 78 per cent nitrogen, 21% oxygen, and 1% other gases.
• These gases are found in layers (troposphere, stratosphere, mesosphere, thermosphere, and exosphere) that are defined by temperature and pressure differences.
• The atmosphere shields life on Earth from harmful ultraviolet (UV) radiation, keeps the globe warm through insulation and prevents temperature extremes during the day and night.
• The sun heats the atmosphere, causing it to convect, which drives global air circulation and weather patterns.