Answer the following
1) List the different layers of the atmosphere
2) Define global warming
3) Why do mountain climbers carry with oxygen cylinder
4) Write a short on the major continent of the earth
Please answer fast
Answers
Answer:
1.The different layers of the atmosphere are:-troposphere, stratosphere, mesosphere, thermosphere and exosphere.
2.A gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, CFCs, and other pollutants is known as global warming.
3.Mountaineers carry an oxygen cylinder along with them. It is because when they climb mountains, as altitude increases, the amount of oxygen level in the atmospheric air decreases as trees are not found at higher altitudes. As a result, mountaineers suffer from dizziness.
4.A continent is one of Earth's seven main divisions of land. The continents are, from largest to smallest: Asia, Africa, North America, South America, Antarctica, Europe, and Australia
Explanation:
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Answer:
Ans 1 - The atmosphere is comprised of layers based on temperature. These layers are the troposphere, stratosphere, mesosphere and thermosphere. A further region at about 500 km above the Earth's surface is called the exosphere.
Ans 2 - A gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, CFCs, and other pollutants.
Ans 3 - Mountaineers carry an oxygen cylinder along with them. It is because when they climb mountains, as altitude increases, the amount of oxygen level in the atmospheric air decreases as trees are not found at higher altitudes. As a result, mountaineers suffer from dizziness.
Ans 4 - Asia: It is largest continent on Earth covering an area of 4,45,79,000km². It shares the continental landmass of Eurasia. It covers about 33% of Earth's total land. Though Russia is the largest county in Asia, China is considered the largest because small part of Russia is located in Europe also.
Africa: It is the second largest country covering an area of 3,03,70,000km². It covers 6% of Earth's total surface. Nigeria is its largest country. The world's largest desert, The Sahara and the world's longest canal, The Suez Canal are located in Africa.
North America: Its is the third largest continent and covers an area of 2,47,09,000km². Canada is its largest country.
South America: It is the fourth largest county and covers an area of 1,78,40,000km². The world's highest water falls , The Angel Falls(Venezuela) and the longest mountain range, The Andes are located in this continent.
Europe: It is the fifth largest continent covering an area of 1,01,80,000km². It covers 2% of Earth's total surface. Though Russia covers a small part in Europe, it is considered the largest country in Europe with an are of 39,72,400km². Europe's major physical features are the Pyrenees and The Alps.
Australia: It is the sixth largest continent and largest island on Earth. Sydney i its largest city. Australia covers an area of 76,92,024km². The Great Barrier Reef,the worlds largest coral reef belong to Australia.
Antarctica : It is the world's smallest continent with an area of 1,40,000km². It ha no countries. The world's largest glacial lake , Vostok , belongs to Antarctica.
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