Front

Habitable

Back

Having the conditions necessary to support life

Front

Rocky Planet

Back

Any planet with a solid surface, such as Earth or Mars

Front

System

Back

Set of interacting parts forming a complex whole

Front

Hydrosphere

Back

The liquid water and ice on a planet

Front

Geosphere

Back

The solid part of a rocky planet

Front

Landform

Back

A feature that forms on the surface of a planet, such as a mountain, channel, or sand dune

Front

Channel

Back

A long, narrow groove that forms where water, lava, or other liquid flows

Front

Atmosphere

Back

The mixture of gasses surrounding a planet

Front

Geologic Process

Back

An event or series of events that causes changes in the geosphere, such as flowing water or lava

Front

Biosphere

Back

All the living things on a planet