Vocab Quiz #24: Unit 6 Space 4

1st and smallest planet in our solar system. A terrestrial planet that experiences the shortest and fastest orbit around the Sun. It has a small and rocky surface and dramatic temperature changes.

• Mercury
• Venus
• Mars
• Earth

A percentage of original size to enlarge or reduce the size of an object.

• Model
• Scale
• Distance
• Gravity

A typical star that is the source of light and heat for the planets in the solar system.

• Milky Way Galaxy
• Solar System
• Sun
• Jupiter

A force of attraction between objects that is due to their masses.

• Model
• Scale
• Distance
• Gravity

The eight and farthest known planet from the Sun, this planet is not visible to the unaided eye and is the only planet in the Solar System that was found using mathematical predictions rather than being observed directly. It is the fourth largest planet in the Solar System by diameter, the third-most-massive planet, and the densest giant planet.

• Jupiter
• Saturn
• Uranus
• Neptune

The seventh planet from the Sun. It is a gaseous cyan-colored ice giant. It is the only planet that spins on its side and spins in the opposite direction as Earth and most other planets.

• Jupiter
• Saturn
• Uranus
• Neptune

The fifth planet from the Sun and the largest in the Solar System. A gas giant, this planet has a mass that is more than two and a half times that of all the other planets in the Solar System combined.

• Jupiter
• Saturn
• Uranus
• Neptune

The fourth planet from the sun; a terrestrial planet noted by its distinct red color. It has a very thin atmosphere, a dusty desert surface, ice at the poles, and is the only planet we have successfully sent robots to explore.

• Mercury
• Venus
• Earth
• Mars

Sun, planets, and all the other objects that revolve around the sun.

• Milky Way Galaxy
• Solar System
• Sun
• Planet

The name of our galaxy, a spiral galaxy that contains about 400 billion stars.

• Sombraro Glaxy
• Black Eye Galaxy
• Milky Way Galaxy
• Andromeda Galaxy