The Interior of the Earth (Extra Questions)

The Interior of the Earth

1. Why is Earth’s Inner Core Solid? 

Because of the pressure exerted by the overlying rocks.

2. How is a rock different from mineral? 

Rocks are mixture of various minerals

3.  What is Mineral and Rocks

Minerals are the building blocks of rocks. Geologists define a mineral as: A naturally occurring, inorganic, solid, crystalline substance which has a fixed structure and a chemical composition which is either fixed or which may vary within certain defined limits.

4. What are three types of rocks?

The three main types, or classes, of rock aresedimentary, metamorphic, and igneous

5. What are sedimentary rocks?

Sedimentary rocks are types of rock that are formed by the deposition and subsequent cementation of that material at the Earth's surface and within bodies of water. Sedimentation is the collective name for processes that cause mineral and/or organic particles (detritus) to settle in place.

6. What are igneous rocks?

 Igneous rock (derived from the Latin word ignis meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma or lava.

7. What are metamorphic rocks?

A metamorphic rock is a result of a transformation of a pre-existing rock. The original rock is subjected to very high heat and pressure, which cause obvious physical and/or chemical changes. Examples of these rock types include marble, slate, gneiss, schist.

8.Are the forces that drive the rock cycle beneath earth’s surface is same as the forces that drive the rock cycle on or near earth’s surface?

No they are not the same because the forces different . Like wind, water, etc is at work on the surface whereas that is not the case inside the Earth.