The atmosphere is the layer of gases that surrounds the Earth and is held in place by gravity. It is composed of a mixture of gases, including nitrogen (78%), oxygen (21%), and trace amounts of other gases such as carbon dioxide, argon, and neon. The atmosphere plays a crucial role in protecting life on Earth by filtering out harmful radiation from the sun, regulating the planet’s temperature, and providing the air we breathe. It is divided into several layers based on temperature and composition, including the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. The atmosphere is constantly changing due to natural processes such as weather and climate patterns, as well as human activities like air pollution and greenhouse gas emissions.
Here are some MCQs on atmosphere :
1. What is the most abundant gas in the Earth’s atmosphere?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Argon
2. What is the second most abundant gas in the Earth’s atmosphere?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Argon
3. What is the layer of the Earth’s atmosphere closest to the Earth’s surface?
a) Stratosphere
b) Troposphere
c) Mesosphere
d) Thermosphere
4. What is the name of the process by which carbon dioxide is removed from the atmosphere and stored in the ocean or in plant and animal tissues?
a) Photosynthesis
b) Respiration
c) Combustion
d) Carbon sequestration
5. What is the name of the layer of the Earth’s atmosphere that contains the ozone layer?
a) Stratosphere
b) Troposphere
c) Mesosphere
d) Thermosphere
