Inside our Earth

The Earth is about ............. crore years old

• 455

• 467

• 404

• 460

The detailed study of the interior of the Earth is done by ..................................... .

• Scientist

• Geologist

• Archaeologist

• Doctor

The temperature of the Earth in the centre is about ............................ .

• 5500 degree C

• 5555 degree C

• 5000 degree C

• 5005 degree C

The average density of the Earth is about ........... per cubic cm

• 5.3

• 5,4

• 5.0

• 5.5

The concentric layers of the earth are ................. , ..................... and .............. .

• Igneous , Sedimentary and Metamorphic

• crust , mantle and core

Crust is also called ................................ .

• Barrysphere

• Lithosphere

• Northern-hemisphere

• Southern- hemisphere

What are the 2 types of crust ?

• igneous and sedimentary

• nickel and iron

• Continental and oceanic

• Intrusive and extrusive

Continental crust is made up of ........................ and oceanic crust is made up of ............................ .

• rocks and minerals

• sial and sima

• iron and magnesium

• nickel and iron

.................................. lies between crust and core

• core

• Mantle

• Sedimentary rock

• crust

......................... is found in Mantle

• a molten material

• magma

• lava

• none of these