Planet Earth

Center of the Earth, formed of hot iron mixed with other metals

• Core

• Mantle

The layer of rock between the Earth's crust and core

• Mantle

• Lithosphere

The layer of rock that forms Earth's outer surface

• Crust

• Mantle

A thin layer of gases surrounding Earth which contains the air we breathe

• Hydrosphere

• Atmosphere

All the water at and near the surface of the Earth, 97% of which is in oceans

• Hydrosphere

• Lithosphere

The land or surface areas on Earth, including the continents, islands, and ocean basins

• Lithosphere

• Hydrosphere

The chemical and physical processes that break down rock at Earth's surface

• Weathering

• Erosion

Processes by which rock, sand, and soil are broken down and carried away by natural forces such as wind or water

• Weathering

• Erosion

The theory that several large, moving sections of the Earth's surface glide over the mantle, which may result in the formation of mountains or cause earthquakes and volcanic eruptions when they collide

• Plate Tectonics

• Solar System

The Planets, their Moons and all other bodies that travel around the Sun, including asteroids, meteoroids, and comets

• The Solar System

• Continental Drift