Download Inner Planets

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Terrestrial Planet – the four small, dense,
rocky planets that orbit closest to the sun
Astronomical Unit – equals the average
distance between the sun and Earth
Sun – Mercury – Venus – Earth - Mars
Slow rotation
 Close to the sun
 No atmosphere
Carbon dioxide in the atmosphere traps
 Volcanoes
 Oxygen
 Energy source
Covered lava flow in the northern
 Heavily cratered in the southern
The largest terrestrial planet is Earth.
 Venus has clouds that rain sulfuric acid
on the planet.
 Huge dust storms sweep across the
surface of Mars.
 Earth is the most geologically active of
the terrestrial planets.
 Mercury has the thinnest atmosphere of
the terrestrial planets.
Rotation is one turn on its axis
Revolution is one rotation around the sun