Write a short note on
. Lithosphere
.Hydrosphere
.Atmosphere
.Biosphere
Class 7 CBSE CHAPTER 1 Geography
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LITHOSPHERE
LITHOSPHERE The lithosphere is the solid shell of the planet Earth. That means the crust, plus the part of the upper mantle that behaves elastically on long time scales. Under the lithospere is the asthenosphere, the weaker, hotter, and deeper part of the upper mantle. This part can flow.
HYDROSPHERE
A hydrosphere is the total amount of water on a planet. The hydrosphere includes water that is on the surface of the planet, underground, and in the air. A planet'shydrosphere can be liquid, vapor, or ice. On Earth, liquid water exists on the surface in the form of oceans, lakes and rivers.
ATMOSPHERE
ATMOSPHERE It is held in place by Earth's gravity. It is made up mainly of nitrogen (78.1%). It also has plentiful oxygen (20.9%) and small amounts of argon (0.9%), carbon dioxide (~ 0.035%), water vapor, and other gases. Theatmosphere protects life on Earth by absorbing (taking) ultraviolet rays from the sun.
BIOSPHERE
The biosphere is one of the four layers that surround the Earth along with the lithosphere (rock), hydrosphere (water) and atmosphere (air) and it is the sum of all the ecosystems. The biosphere is unique. So far there has been no existence of life elsewhere in the universe. Life on Earth depends on the sun.
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ANSWER:
Lithosphere:
land part of the earth is called lithosphere.
Hydrosphere:
water part of earth like oceans,lakes and rivers are called hydrosphere.
Atmosphere:
Atmosphere is mixer of all kind of gases.
Biosphere:
all place in the earth where plants,animals and humans live.
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