Question

step by step process of how igneous rocks form

Answer 1

These rocks change over hundreds of years in the six steps of the rock cycle:

Weathering & Erosion. Igneous, sedimentary, and metamorphic rocks on the surface of the earth are constantly being broken down by wind and water. ...

Transportation. ...

Deposition. ...

Compaction & Cementation. ...

Metamorphism. ...

Rock Melting.

Answer 2

hope it helps

1 Igneous rock is made. Igneous rock forms from magma (also called molten rock). Magma is a liquid that is under the earth. When the magma moves to a cooler part of the earth, it loses its heat and crystallizes into an igneous rock.

2 An intrusive igneous rock is. This is formed when magma cools beneath the surface of the earth. The magma is insulated by the surrounding rock, and cools slowly. This allows the rock to form large crystals.

3 An extrusive igneous rock is. When magma erupts onto the earth's surface, it becomes lava in a volcanic eruption. Lava cools and turns to rock relatively quickly. The crystals in the rock don't have much time to form, creating fine-grained rocks with small crystals.

4 What pyroclastic igneous rock is. When there's an explosive volcanic eruption, ash is thrown high into the air. When this ash falls and turns into rock, it's called pyroclastic rock. The minerals are broken into small pieces in this type of rock by the explosive eruption.