Solar System, Grade 3

Which planet is closest to the sun?

• Mercury

• Saturn

• Jupiter

• Mars

The Sun is

• a planet

• a star

• a comet

• an asteroid

Which planet has a reddish-orange rocky surface?

• Mars

• Earth

• Jupiter

• Mercury

Why is Mercury very dry and hot?

• It is the largest planet.

• It has a hot, molten center.

• It is the smallest planet.

• It is the closest planet to the sun.

Which of these planets is the farthest from the Sun?

• Venus

• Saturn

• Mercury

• Neptune

What is a "rotation"?

• When a planet orbits around the sun.

• When a planet turns on its axis, facing the sun part of the time and away from the sun part of the time.

• When the Sun moves around a planet, turning it into day or night.

• The orbit of a planet as it revolves around the Sun.

What are the 4 inner planets?

• Mercury, Earth, Jupiter, Saturn

• Neptune, Uranus, Saturn, Jupiter

• Mercury, Venus Earth, Mars

• Mars, Jupiter, Pluto, Uranus.

Which planet is the only planet that spins on its side as it orbits the Sun?

• Mercury

• Neptune

• Venus

• Uranus

Which planet is an outer planet?

• Jupiter

• Mars

• Earth

• Venus

What do all the outer planets have in common?

• They all can support life

• The all have surfaces that are solid

• They all have surfaces that are not solid

• They all have surfaces that have liquid water