Igneous Rocks

Igneous rocks form when ____.

• sediment is compacted

• erosion wears away rock

• melted rock cools and hardens

• extreme pressure changes rock

Temperatures inside Earth are hot enough to melt rock.

• True

• False

Tags

NGSS.MS-PS1-4

Melted rock is called ____.

• magma

• lava

• volcano

• both magma and lava

Which word has a similar meaning to the word molten?

• melted

• solid

• large

• deep

Intrusive igneous rocks form ____.

• at Earth's surface

• underground

• near volcanoes

• underwater

Tags

NGSS.MS-ESS2-1

Intrusive igneous rocks cool too quickly for large crystals to form.

• True

• False

Where might you find an extrusive igneous rock?

• near a volcano

• near a divergent fault line

• at Earth's surface

• all of the above

How are lava and magma different?

• magma is melted and lava is solid

• magma is hot and lava is cold

• magma is underground and lava is at Earth's surface

• magma cools quickly and lava cools slowly

Which is not a type of extrusive igneous rock?

• granite

• obsidian

• basalt

• pumice

Igneous rocks are some of the oldest rocks on Earth.

• True

• False

Tags

NGSS.MS-ESS1-4