ig rock

What are the two main types of igneous rocks?

• Sedimentary and metamorphic

• Intrusive and extrusive

• Coarse and fine grained

• Volcanic and plutonic

Where do intrusive igneous rocks form?

• In the ocean

• In the atmosphere

• On the Earth's surface

• Below the Earth's surface

What is a characteristic of intrusive igneous rocks?

• No crystals

• Formed in water

• Fine grained

• Coarse grained with visible crystals

How do extrusive igneous rocks form?

• By cooling and solidifying below the Earth's surface

• By cooling and solidifying on the Earth's surface

• By melting in the Earth's core

• By evaporating in the atmosphere

What is a characteristic of extrusive igneous rocks?

• Coarse grained

• Large crystals

• Fine grained with small or no crystals

• Formed in the Earth's core