Igneous Rocks

Front

What is an igneous rock?

Back

An igneous rock is a type of rock that forms from the cooling and solidification of magma or lava.

Front

What are the two main types of igneous rocks?

Back

The two main types of igneous rocks are intrusive (formed beneath the Earth's surface) and extrusive (formed on the Earth's surface).

Front

What is an intrusive rock?

Back

An intrusive rock is an igneous rock that forms when magma cools and solidifies beneath the Earth's surface.

Front

What is an extrusive rock?

Back

An extrusive rock is an igneous rock that forms when lava cools and solidifies on the Earth's surface.

Front

What is the texture of obsidian?

Back

Obsidian is a fine-grained igneous rock.

Front

What type of igneous rock is formed from magma high in silica?

Back

Magma high in silica usually forms light-colored igneous rocks.

Front

What is the primary component of rocks?

Back

Rocks are primarily made out of minerals.

Front

Where is magma found?

Back

Magma is found inside the Earth.

Front

What is the difference between magma and lava?

Back

Magma is molten rock beneath the Earth's surface, while lava is molten rock that has erupted onto the Earth's surface.

Front

What is the cooling rate of intrusive rocks compared to extrusive rocks?

Back

Intrusive rocks cool slowly, allowing large crystals to form, while extrusive rocks cool quickly, resulting in small crystals.