Question

Granite is an

• A. Igneous rock
• B. Metamorphic rock
• C. Sedimentary rock
• D. All the above

Answer 1

Answer:

A. Igneous rock

Igneous rocks

• Igneous rocks form out of magma and lava from the interior of the earth, they are known as primary rocks.
• When magma in its upward movement cools and turns into solid form it is called igneous rock.
• The process of cooling and solidification can happen in the earth’s crust or on the surface of the earth.
• Igneous rocks are classified based on texture.
• Texture depends upon size and arrangement of grains or other physical conditions of the materials.
• If molten material is cooled slowly at great depths, mineral grains may be very large. Sudden cooling (at the surface) results in small and smooth grains.
• Intermediate conditions of cooling would result in intermediate sizes of grains making up igneous rocks.
• Granite, gabbro, pegmatite, basalt, volcanic breccia and tuff are some of the examples of igneous rocks.