The study of the earth.
The solid, iron-nickel center of the Earth. This is the hottest layer.
The liquid, iron-nickel outer center of the Earth.
The thick, molten, rocky layer between the crust and the core.
The thin, solid, rocky outer layer of the Earth.
A large piece of the Earth's crust and upper mantle that slowly moves on top of a boiling mantle.
Rock made when melted rock (magma/lava) cools.
A type of rock formed by layers of sediments that were squeezed and stuck together over a long time
Rock made from other rocks that change through heat and pressure.
The never ending cycle of rocks changing from one type to another.
Force that builds up the earth.
Force that takes down the earth.
The breaking up of earth materials into smaller pieces.
Moving sediments by water, wind, or glaciers.
Dropping sediments down in a new location.
Pieces of broken up rock.
A large body of ice that moves slowly, usually downhill
Features of the earth's surface, such as plains, continent, mountain, canyons, hills, plateau, or valley.
Triangular piece of land formed from water depositing sediment at the opening of a river
A deep valley with very steep sides - often carved from the Earth by a river (moving water)
Hill or a ridge made of sand. Dunes are shaped by the wind, and change all the time
Low place or land between two mountains
The remains or imprint of a previously living organism.
Source of energy made from dead plants and animals that have been placed under extreme heat and pressure. Examples include oil, coal, and natural gas.