Solar System and Its Features

Front

Objects that make up the solar system

Back

The sun, the planets and their moons, and several kinds of smaller objects that revolve around the sun.

Front

Two things needed for other planets to be habitable

Back

A source of energy and liquid water.

Front

Common characteristics of the 4 inner planets

Back

Mercury, Venus, and Mars are similar to Earth in some important ways: they are small, close to the sun and made of solid rock.

Front

Smallest inner planet

Back

Mercury is the smallest inner planet.

Front

Four spheres of Earth

Back

Atmosphere, hydrosphere, geosphere, and biosphere.

Front

Atmosphere

Back

Contains the mixture of gases surrounding the planet.

Front

Hydrosphere

Back

Contains the total amount of water on a planet.

Front

Geosphere

Back

Contains the solid rock layer of a planet.

Front

Biosphere

Back

Contains all of the living things on a planet.

Front

Inner planet with the most in common with Earth

Back

Mars possibly once had liquid water.