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Answer 1

• What is lithosphere ?

→ Lithosphere is the outer part of the earth which is rocky and coolest and rigid part of the earth.

• What is the layer below the crust known as ?

→ Layer below the crust is known as mantle.

• What is the thickness of the mantle ?

→ Thickness of the mantle is about 2900 Kms.

• The compounds of which elements are found in the mantle ?

→ Iron, aluminium, calcium and potassium are found in the mantle.

• What are the two layers of mantle ?

→ The two layers of mantle are lithosphere and asthenosphere.

• What is the average density of the mantle ?

→ The average density of the mantle is 5.5gm/cm³.

• What is the density of lower mantle ?

→ The density of lower mantle is 4.4gm/cm³.

• What is the estimated temperature in the mantle ?

→ The estimated temperature of the mantle is about 1000°C to 3700°C.

• What is the layer below the mantle known as ?

→ The layer below the mantle is known as asthenosphere.

• What is the thickness of the core ?

→ Thickness of the core is about 2200 Kms.

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Answer 2

Answer:

given below:)

Explanation:

●Q1)What is lithosphere?

A1)The lithosphere is the solid, outer part of the earth, including the brittle upper portion of the mantle and the crust.

●Q2)What is the layer below the crust known as?

A2)Mantle

●Q3)What is the thickness of mantle?

A3)About 2,900km

●Q4)The compounds of which elements are found in the mantle?

A4)the compounds that mantle is made up of are:-

oxygen, silicon,magnesium,iron,aluminium,calcium,sodium & potassium .

●Q5)What are the two layers of mantle?

A5)Lithosphere & Asthenosphere

●Q6)What is the average density of mantle?

A6)5.5g/cm³

●Q7)What is the density of lower mantle?

A7)4.4g/cm³

●Q8)What is the estimated temperature in the mantle?

A8)From 1000⁰Celcius(1832⁰Fahrenheit) to 3700⁰Celcius (6692⁰Farenheit)

●Q9)What is the layer below the mantle known as?

A9)Asthenosphere

●Q10)What is the thickness of the core?

A10)2,200km thick liquid:- Outer core

1,200km thick solid:- Inner core

Hope it helps you:)

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