Which among the following is rich in iron and magnesium?

The average density of which among the following varies from 3.5 to 5.5? 

Which among the following forms the ocean floor? 

What is acknowledged that the lithosphere is broken into several big and small plates? 

The solid outer layer of the Earth,consisting of various rocks and minerals is called the 

Which is the outer most layer of the Earth.

The atmosphere is divided into how many different layers? 

Which among the following is thicker under the continents than under the ocean floor? 

The denser layer underneath the SIAL layer is called 

Which among the following is molten rock found in the hot interiors of the Earth?