Big Idea 5

Front

What are the inner planets?

Back

The inner planets are Mercury, Venus, Earth, and Mars. They are located closer to the sun and are made of solid rock.

Front

What is a gas giant?

Back

A gas giant is a large planet that is not primarily composed of solid matter. Examples include Jupiter and Saturn.

Front

Which planets are known as the gas giants?

Back

The gas giants are Jupiter, Saturn, Uranus, and Neptune.

Front

What is the main characteristic of the inner planets?

Back

The inner planets are rocky and have solid surfaces, unlike the outer planets which are gas giants.

Front

Do inner planets have rings?

Back

No, inner planets do not have rings.

Front

What is the sun classified as?

Back

The sun is classified as a star.

Front

Which planet is closest to the sun?

Back

Mercury is the closest planet to the sun.

Front

How many moons do inner planets typically have?

Back

Inner planets typically have very few moons; for example, Mercury and Venus have no moons.

Front

What is the difference between inner and outer planets?

Back

Inner planets are rocky and closer to the sun, while outer planets are gas giants and farther from the sun.

Front

What are impact craters?

Back

Impact craters are depressions on a planet's surface caused by the collision of meteoroids.