I WONDER - Are There Different Types Of Igneous Rocks?

The video tutorial explains the two types of igneous rocks: intrusive and extrusive. Intrusive igneous rocks form when magma cools and solidifies below the Earth's surface, resulting in coarse-grained rocks with visible crystals, known as plutons. Extrusive igneous rocks form when lava cools and solidifies on the Earth's surface, creating fine-grained volcanic rocks with small or no crystals.

What are the two main types of igneous rocks?

• Sedimentary and metamorphic

• Intrusive and extrusive

• Volcanic and plutonic

• Granite and basalt

How do intrusive igneous rocks form?

• By being compressed under high pressure

• By rapid cooling in water

• By cooling and solidifying below the Earth's surface

• By cooling and solidifying on the Earth's surface

What is a characteristic feature of intrusive igneous rocks?

• Presence of fossils

• Fine-grained texture

• Layered structure

• Coarse-grained texture with visible crystals

Where do extrusive igneous rocks form?

• In the atmosphere

• In the ocean

• On the Earth's surface

• Below the Earth's surface

What is a common characteristic of extrusive igneous rocks?

• Large crystals

• Fine-grained texture with small or no crystals

• Presence of gas bubbles

• Layered appearance