The Solar System: Inner & Outer Planets

Front

What is a planet?

Back

A celestial body that moves in an elliptical orbit around a star.

Front

What is Olympus Mons?

Back

The largest volcano in the solar system, located on Mars.

Front

Which planet is the hottest in the solar system?

Back

Venus.

Front

What is Ganymede?

Back

A Galilean moon of Jupiter that has a magnetic field and an underground ocean.

Front

What does 'elliptical' mean?

Back

An oval, deformed shape that describes the motion of planets revolving around the sun.

Front

What are the inner planets?

Back

Mercury, Venus, Earth, and Mars; they are rocky and closer to the sun.

Front

What are the outer planets?

Back

Jupiter, Saturn, Uranus, and Neptune; they are gas giants and farther from the sun.

Front

What is the asteroid belt?

Back

A region of space between Mars and Jupiter where many asteroids orbit the sun.

Front

What is a comet?

Back

A celestial body made of ice and dust that develops a tail when it approaches the sun.

Front

What is a moon?

Back

A natural satellite that orbits a planet.