A mountain made mostly of rock layers folded by being squeezed together.

A mountain made by huge tilted blocks of rocks separated by a fault.

The breaking down of rocks into smaller pieces by natural processes.

Picking up and removal of rock fragments and other particles.

Weathered rock that can support the growth of rooted plants.

Produced by breaking down plant and animal remains.

Series of horizons in soil from the surface down to bedrock.

System is something like a river system.

The downhill movement of Earth material caused by gravity

Particles are known as sediments.

A huge sheet of ice and snow that moves slowly over the land.

A jumble of many sizes of sediment deposited by a glacier.

The moraine is left behind as mounds or long ridges.

A naturally occurring solid with a definite structure.

When hot, liquid lava cools and hardens into a solid

Is bits and pieces of rocks clumped together

Another kind of rock

Rocks are continually changing from one to another

The idea that in a series of rock layers.

The age of a rock as compared with another rock.

A listing of Earth's rock layers in order from oldest to youngest.

Any trace, imprint, or remains of a living thing.

The remains of a living thing that was widespread.

The time it takes for half the mass of a radioactive.

The age of a rock in years.

One of the four long stretches of time in Earth's history.