unit 7 test sci

A ________ is a large sphere of super-hot plasma that is able to give off light.

• Star

• planet

• moon

• comet

The distance that light can travel in one year or, 9.5 trillion kilometers, is called a __________.

• Light-year

• star-year

• flash-year

• megameter

A ________ is a large round body that orbits a star, does not orbit anything else, and has a clear orbit.

• planet

• comet

• asteroid

• moon

A ________ is a system of millions to billions of stars, dust, and gas clouds.

• Galaxy

• Comet

• Universe

• Kuiper Belt

A ________ is a natural object that orbits a planet.

• Moon

• Star

• Asteroid

• Comet

A _________ is the super-bright explosion of a dying massive star.

• Supernova

• Nebula

• Nova

• Comet

A _________ is a massive chunk of rock that orbits the Sun.

• Asteroid

• comet

• nebula

• supernova

A _________ is an object made out of rock and ice that orbits the Sun.

• Comet

• asteroid

• supernova

• nebula

A meteor that gets burned up by Earth’s atmosphere is called a ________.

• Shooting star

• Comet

• Nebula

• Moon

__________ is the force of attraction between one object with mass and another object with mass.

• Gravity

• Magnetism

• Friction

• Electricity