Science: Types of Rocks

Which is the only type of rock that can contain fossils?

• igneous

• metamorphic

• sedimentary

Rocks that have minerals that are too small to see are called ______ grained.

• fine

• coarse

Why will intrusive igneous rocks have big mineral grains?

• magma cools very slowly and big crystals form

• there is a lot of heat and pressure added to the rock

• water deposits large minerals near a volcano

• lava cools very quickly on the surface of the Earth

Sedimentary rock is formed from_________.

• cooling of magma or lava

• melting

• compacting and cementing

• heat and pressure

Metamorphic rock is formed from _________.

• melting

• weathering and erosion

• compacting and cementing

• heat and pressure

Rocks that are foliated have ___________.

• tiny holes made from gas bubbles

• a glassy texture

• shiny crystals

• layers

Igneous rock is formed from ___________,

• cooling of magma or lava

• heat and pressure

• compacting and cementing

• weathering and erosion

Which type of rock will have ribbon-like layers?

• igneous

• metamorphic

• sedimentary

This is Gabbro. This is an _________________ igneous rock because the big mineral grains show that it cooled very slowly.

• intrusive

• extrusive

This is Pumice. This is an __________ igneous rock because it cooled very quickly and produced holes.

• intrusive

• extrusive