Lesson on the Types of Rocks

Multiple Select

What are the 3 main types of rocks? (check all that apply)

• metamorphic

• sedimentary

• mineralic

• organic

• igneous

Multiple Choice

Which type of igneous rock is formed by lava, cools quickly, and thus has smaller or no crystals?

• extrusive igneous

• intrusive igneous

Multiple Choice

Igneous rocks with large crystals mostly like formed where?

• On or near the surface

• below the surface

• near water

Multiple Choice

Which type of igneous rock has large crystals?

• intrusive

• extrusive

Multiple Choice

What causes holes in some igneous rocks?

• water

• exposure to sun

• air bubbles forming during cooling

• weather

Multiple Choice

What process forms sedimentary rocks

• heat and pressure

• coolling

• erosion and lithification (cementation/compaction)

• melting

Multiple Choice

Broken pieces of rock caused by weathering and erosion are called __.

• pellets

• boulders

• bricks

• clasts

Multiple Select

The main types of sedimentary rocks are ___.

• clastic (made of broken pieces)

• organic (made of once living things like fossils)

• chemical (formed from evaporation as minerals dissolve out of water)

Multiple Choice

Which process forms metamorphic rocks?

• heat and pressure

• melting

• erosion

• cooling

Multiple Choice

Metamorphic rocks with bands or layers are referred to as __

• foliated

• non-foliated

Multiple Choice

True or False: Any existing rock that is exposed to heat and pressure can turn into metamorphic rock.

• true

• false

Multiple Choice

True or False: We are able to see metamorphic rocks because earthquakes, volcanoes, and other tectonic activities push them up from inside the Earth.

• true

• false