The densest parts of Earth, including the crust, mantle, and core

The portion of Earth that consists of water in any of its forms, including oceans, glaciers, rivers, lakes, groundwater and water vapor.

The portion of the hydrosphere that is frozen, including all the ice and snow on land, plus sea and lake ice.

The parts of Earth that contain living organisms.

The ability to do work or cause change.

The shape of the land determined by elevation, relief,and landforms.

A Feature on the surface of Earth, such as a coastline, dune or mountain.

A landform with high elevation and high relief.

A line that forms the boundary between the land and the ocean or a lake.

A hill of sand piled up by the wind

A natural stream of water that flows into another body of water, such as an ocean, lake, or another river.

A landform made of sediment that is deposited where a river flows into an ocean or lake.

A process in which mapmakers determine distances and elevations using instrument and the principles of geometry

The continual movement of water among Earth’s atmosphere, oceans, and land surface through evaporation, condensation and precipitation.

The process by which molecules at the surface of a liquid absorb enough energy to change to a gas

The process by which water is lost through a plant’s leaves.

The change of state from a gas to a liquid

Any form of water that falls from clouds and reaches Earth’s surface as rain, snow,sleet or hail.

The land area that supplies water to a river system.

An underground layer of rock or sediment that holds water.

A hole sunk into the ground to reach a supply of water.