Types of Rocks- Igneous

All you need to know

Ingneous rocks are made from lava that is cooled down and hardened.

How they are made

Igneous rocks are made from magma that is cooled down and hardened.

Once the magma is cooled it is called lava

How they are made

The magma reaches the earth’s surface from a volcano.

How they are made

The magma reaches the earth’s surface from a volcano.

The rock either cools inside or outside the volcano

How they are made

Rocks cool outside

Rocks cool inside

Where magmaIs kept

Igneous rocks cooled inside a volcano are called intrusive

How they are made

Rocks cool outside

Rocks cool inside

Where magmaIs kept

Igneous rocks cooled inside a volcano are called intrusive

Igneous rocks cooled outside a volcano are called extrusive

How they are made

Rocks cool outside

Rocks cool inside

Where magmaIs kept

The rocks inside the volcano have larger crystals because they cool slower.

How they are made

Intrusive IgneousRock

Large crystals

The rocks inside the volcano have larger crystals because they cool slower.

The Rocks outside the volcano have small crystals because they cool faster. Some have no crystals at all

How they are made

Extrusive igneous Rock

Little crystals

Here are some examples you need to know. You must know if they are extrusive or intrusive as well.

Examples

Here are some examples you need to know. You must know if they are extrusive or intrusive as well.

The first one is Bassalt It is extrusive It is cooled fast but has some crystals

Examples

The Next one is Obsidean It is Extrusive It has no crystals

Examples

The Next one is Obsidean It is Extrusive It has no crystals

The Next one is Pumice It is extrusive It is very light and is holy

Examples

The last is called granite It is Intrusive It has large crystals It is used for benchtops

Examples