Solar System Review

Which planet is third from the sun?

• Mars

• Venus

• Earth

• Jupiter

What holds the planets in their orbits around the sun?

• Magnetism

• Gravity

• Friction

• Inertia

What is the closest planet to the sun?

• Venus

• Earth

• Mercury

• Mars

What is the name of our galaxy?

• Milky Way

• Andromeda

• Triangulum

• Whirlpool

When Earth spins, it turns around an imaginary line called a(n)

• Axis

• Orbit

• Equator

• Meridian

What is the term for a year on Earth?

• The time it takes for Earth to orbit the sun, approximately 365 days.

• A period of 12 lunar cycles, about 354 days.

• The time it takes for the moon to orbit the Earth, approximately 27 days.

• A measurement of time based on the rotation of the Earth, about 24 hours.

List the correct order of the planets from the sun.

• Earth, Mars, Venus, Mercury, Jupiter, Saturn, Uranus, Neptune

• Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

• Mars, Earth, Venus, Mercury, Saturn, Jupiter, Uranus, Neptune

• Neptune, Uranus, Saturn, Jupiter, Mars, Earth, Venus, Mercury

Which planet is known for its rings?

• Jupiter

• Mars

• Saturn

• Venus

Are the inner or outer planets made up of mostly rock?

• Inner

• Outer

• Gas Giants

• Ice Giants

What force keeps the planets in orbit around the sun?

• Magnetism

• Friction

• Gravity

• Electromagnetism