The Three Types of Rocks and the Rock Cycle

Which type of rock forms when lava cools and hardens?

• Metamorphic

• Sedimentary

• Igneous

• Fossilized

How do sedimentary rocks form?

• From cooling magma

• From pieces of rock and sand being pressed together over time

• From melting under high heat

• From being buried deep in the Earth

What are sediments?

• Large crystals in igneous rock

• Small pieces of rock, sand, and shells that pile up in layers

• Hot magma inside the Earth

• The minerals inside metamorphic rocks

Which of the following is an example of an igneous rock?

• Marble

• Limestone

• Obsidian

• Sandstone

How do metamorphic rocks form?

• From cooling lava

• From heat and pressure changing rocks deep inside the Earth

• From water carrying away small pieces of rock

• From layering sediments over time

What does the rock cycle explain?

• How earthquakes happen

• How rocks can change from one type to another over time

• Why fossils form in sedimentary rocks

• How magma is created inside volcanoes

Which rock is most likely to have fossils?

• Granite

• Slate

• Limestone

• Obsidian

Which of these is NOT part of the rock cycle?

• Igneous rock can break into sediment and become sedimentary rock.

• Metamorphic rock can melt and become magma.

• Sedimentary rock can cool and become magma.

• Sedimentary rock can turn into metamorphic rock under heat and pressure.