Small pieces of rock

An artificial lake where water collects

Inner layer of the earth

A German scientist's theory was continental drift

Cracks in the earth's crust where movement takes place

Breaking of larger rocks into smaller pieces

Storm drains, levees and dams

Only layer that is a liquid

Plates slide past each other, moving in opposite directions

Melted rock below the earth's surface

Dropping, or releasing, of sediments that have been moved from one place to another

Form when blocks move in several ways along one or more faults

The outer layer of the earth

Plates move away from each other, creates new crust

The area where many earthquakes and volcanoes occur and it borders the Pacific Ocean

Changes rocks into other materials (acid rain)

Form when two plates collide and force layers into folds

The layer just below the earth's crust

Plates move toward each other, subduction occurs

Magma that reaches the earth's surface

Wear down Earth's surface

Form when magma rises toward the surface but doesn't break through the crust

Upper part of the mantle joins with the crust

Remains or traces of a plant/animal that lived a long time ago

Islands formed by volcanoes