4.5 Solar System SOL Review Test

Early astronomers believed that the _____ was the center of the solar system.

• sun
• earth

All the planets in our solar system revolve around the _____.

• sun
• earth

The name given to the four planets that are closest to the sun and mostly made of rock.

• terrestrial planets
• gas giants

The name given to the four planets that are furthest from the sun and made of gasses.

• terrestrial planets
• gas giants

The closest planet to the sun. It is also the smallest and fastest planet in our solar system.

• mercury
• venus
• neptune
• saturn

The second planet from the sun. It has high surface temperatures due to a blanket of clouds that trap heat.

• mercury
• venus
• neptune
• saturn

The third planet from the sun. Its atmosphere, water, and distance from the sun make it ideal for life.

• Earth
• Mars
• Jupiter

The fourth planet from the sun. It is called “the red planet” because of its red surface and has many canyons and riverbeds.

• Uranus
• Mercury
• Venus
• Mars

The sixth planet from the sun. It is known for its large rings.

• Neptune
• Saturn
• Earth

The seventh planet from the sun. It spins on its side and has rings.

• Uranus
• Neptune
• Mars