Hot rocks form magma in which layer?

What is made up of many kinds of rocks? 

Based on its chemical composition,the crust is divided into how many layers? 

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

What is also known as lithosphere? 

Which is the most inaccessible part lying at the center of the Earth? 

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

Crust is also known as

Which among the following is about 3000 km thick? 

Which among the following includes all types of landmasses found on the surface of the Earth?