Question

. Answer the following questions :
1. What do you understand by lithosphere?
2. Name the two layers of lithosphere.
3. What do you understand by mantle?
4. What is the position of mantle in the Earth?
5. What is core? By what other name is it known as:
6. State the composition of the SIAL layer.
7. State the properties of the core of the Earth.
8. What is Earth's crust composed of?
9. What does 'Nife' mean?
10. Why does the temperature increase as we go down
(underground)?




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Answer 1

Answer:

lithosphere means land

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Answer 2

1. answer = the rigid part of the earth consisting of the crust and upper mantle.
2. two layers of crust are crust and upper mantle
3. the part of the earth between the surface and he centre
4. the mantle is the mostly solid bulk of earth's interior the mantle lies between earth's dense , super heated core and it's thik outer layer , the crust
5. the deepest point of the earth is known as the core . it is also known as the crust
6. the term SIAL refers to the upper layer of earth crust namely rocks rich in silicates and aluminium minerals
7. the inner core is probably close to its melting point 4700 k and the adiabatic temperature gradient of the outer is calculated with this as a fixed point giving 3380 k at the core mantle boundary
8. above the core is earth's mantle which is made up if rock containing silicon, iron , magnesium , aluminium, oxygen and other minerals . the rocky surface layer of earth is called the crust .
9. nifeis the earth core which is composed of nickel and iron.
10. in the earth's atmosphere, pressure which is related to number of molecules per unit volume decreases exponentially with altitude . thus if a parcel of air from the surface rises it undergoes an expansion , from higher to lower pressure

Explanation:

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