Extrusive igneous rocks form at Earth's surface.

Here's the step by step process:

1. Extrusive igneous rocks begin as magma, which is molten rock beneath the Earth's surface.

2. When a volcano erupts, it brings the magma to the Earth's surface. Once the magma reaches the surface, it is referred to as lava.

3. As the lava cools and solidifies on the Earth's surface, it forms extrusive igneous rocks.

4. The rapid cooling of the lava results in small crystals, giving extrusive igneous rocks a fine-grained texture. Examples of these types of rocks include basalt and obsidian.

Question

Extrusive igneous rocks form at Earth's surface.

Here's the step by step process:

1. Extrusive igneous rocks begin as magma, which is molten rock beneath the Earth's surface.

2. When a volcano erupts, it brings the magma to the Earth's surface. Once the magma reaches the surface, it is referred to as lava.

3. As the lava cools and solidifies on the Earth's surface, it forms extrusive igneous rocks.

4. The rapid cooling of the lava results in small crystals, giving extrusive igneous rocks a fine-grained texture. Examples of these types of rocks include basalt and obsidian.

Knowee AI · Accepted Answer

Extrusive igneous rocks form at Earth's surface.

Here's the step by step process:

1. Extrusive igneous rocks begin as magma, which is molten rock beneath the Earth's surface.

2. When a volcano erupts, it brings the magma to the Earth's surface. Once the magma reaches the surface, it is referred to as lava.

3. As the lava cools and solidifies on the Earth's surface, it forms extrusive igneous rocks.

4. The rapid cooling of the lava results in small crystals, giving extrusive igneous rocks a fine-grained texture. Examples of these types of rocks include basalt and obsidian.

Extrusive Igneous rocks will form?Deep undergroundAt Earth's surface

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