Question

List few examples of igneous rocks state their uses and explain how they are form

Answer 1

Igneous rock forms when magma (molten rock) cools and solidifies. Extrusive igneous rocks are those formed when magma reaches the surface (at which point it is called lava), cooling and solidifying quickly. Intrusive igneous rocks are formed when magma slowly cools deep below the surface of the earth.
Granite, Rhyolite, Obsidian, Diorite, Felsite, Basalt, and Pumice are all examples of igneous rocks.

Granite is used for flooring in houses.

Basalt can be a rich source of iron and it is commonly used as an ingredient of concrete.

People often use pumice stones to remove dead skin from the bottom of their feet. It is also used in abrasive (harsh) cleaning products and as an ingredient in lightweight construction materials