What is sedimentary rock?

Rocks that are made out of sediments and were pressed into a rock.

What is metamorphic rock?

Rocks that were pressed into the Earth's crust and changed by heat and pressure under there.

What is igneous rock?

Rock that is made when magma erupts and cools.

What is the rock cycle?

The cycle in which rocks are recycled and change form, shape, or type.

What is magma?

Hot, liquid rock.

What is sediment?

What sedimentary rocks are made out of.

How do rocks change into metamorphic rocks?

Heat and pressure.

What is a volcano?

An opening in the Earth's crust that allows magma out of the Earth.

What is weathering and erosion?

What turns a rock into sediment.

What is lithification?

The scientific name of the process of compacting and cementing.

What are fossils?

These are most often found in sedimentary rock.

What is melting?

What happens when a rock is pushed too far down into the Earth.

What is an intrusive rock?

A magma that is inside the volcano that cools and hardens.

What is compacting and cementing?

What turns sediment into sedimentary rock.

What is a diamond?

These can form in igneous rocks and be very valuable.

What are the three types of sedimentary rock?

Clastic, chemical, and biochemical.

What is another way a metamorphic rock can be created.

Tectonic plates and continental collisions.

What is an extrusive rock?

Magma that erupted out of a volcano and cooled and hardened.

What are gas bubbles?

These can form in igneous rocks when they cool quickly.

What is a glassy surface?

This can be a characteristic of igneous rocks when they cool slowly and look shiny.

What are beds or strata?

Layers and layers of sedimentary rock.

What is erosion?

Metamorphic rocks are only exposed due to...

What is marble?

A type of rock that makes up the Taj Mahal and the Venus de Milo, most often used to make sculptures.

What is the 18th century?

When the rock cycle was brought about.

What is geology?

The study of rocks.