interior of the earth

1. Our earth has a layered structure comprising of ____________.

• Crust

• Mantle

• Metallic ball

• Core

name the person who discovered Mohorovicio discontinuity

• Andera

  Mohorovicic

• MR. Discontinuity

• John Newton

• Alexander Fleming

• Andreja

  Mohorovicic

the thickness of the crust is ____________.

• 4-5km

• 5-40km

• 90-150km

• 540km

the innermost shell is called the lower mantle

• TRUE

• FALSE

Answer explanation

Ans. Inner core

Below the crust is the upper mantle, with the upper-most portion referred to as the_______

• Biosphere

• asthenosphere

• 7 sphere

• asphere

Label the parts

(a)  

The upper mantle is only about ______ of the total mantle thickness.

• 30%

• 22%

• 33%

• 20%

The temperature of the lower mantle ranges from ______.

• 1,690 °C / 3,070 °F

• 1691 ℃ / 3075.8℉

• 1385 ℃ / 2525℉

What is the thickness of the Mantle ?

• 2900 km

• 500 km

• 1200 km

• 7502 km

Although the inner core is very hot, it is not liquid like the outer core.

• TRUE

• FALSE