(a) What are the four major domains of the earth? (b) Name the major continents of the earth. (c) Name the two continents that lie entirely in the Southern Hemisphere (d) Name the different layers of atmosphere. le) Why is the earth called the blue planet? Why is the Northern Hemisphere called the Land Hemisphere? Why is the Biosphere important for living organisms?
Answers
a) the four major domains of the earth are:
1. Atmosphere
2. Lithosphere
3. Biosphere
4. Hydrosphere
b) These six continents are Africa, America, Antarctica, Asia, Australia/Oceania, and Europe. By most standards, there are a maximum of seven continents - Africa, Antarctica, Asia, Australia/Oceania, Europe, North America, and South America.
d) 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.
e) Earth is the only planet in our solar system that has a large amount of liquid water. About 74% of the surface of Earth is covered by liquid or frozen water. Because of this, people sometimes call it the blue planet. Because of its water, Earth is home to millions of species of plants and animals.
f) The part of earth which lies in the northern part of equator is called northern hemisphere. The Northern Hemisphere is called the Land Hemisphere because the greater part of Earth's landmass lies in the Northern Hemisphere.
Answer:
(a) The four major domains of the earth are :- Lithosphere, Hydrosphere, Atmosphere and Biosphere.
(b) The major continents of the Earth are :- Africa, America, Asia and Europe.
(c) Australia & Antarctica are the continents that lie entirely in the Southern Hemisphere.
(d) The different layers of atmosphere are :- Troposphere, Stratosphere, Mesosphere, Thermosphere and Exosphere.
(e) Earth is called Blue Planet because it is covered mostly with water.
(f) The Northern Hemisphere is called the land hemisphere because greater part of the landmass lies in the Northern Hemisphere.
(g) Biosphere is important for living organisms because it supports life on the Earth by providing shelter and food etc. to all the living beings.
Explanation:
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