Unit 5 Review

Front

Which planet would most likely have a longer year - the one closer or farther from the sun?

Back

The farther away, the longer the year.

Front

What is the tendency of an object to resist a change in motion?

Back

Inertia.

Front

In redshift, the wavelengths of light become:

Back

Longer.

Front

What is a trend among the Main Sequence Stars?

Back

The hotter the star, the more brightly it burns.

Front

What model of the Solar System shows the sun in the center?

Back

Heliocentric.

Front

What is the definition of gravity?

Back

A force that attracts two bodies toward each other.

Front

What is mass?

Back

The amount of matter in an object.

Front

What is the difference between rotation and revolution?

Back

Rotation is the spinning of an object on its axis; revolution is the orbiting of one object around another.

Front

What is the definition of a planet?

Back

A celestial body that orbits a star and is large enough to be rounded by its own gravity.

Front

What is the significance of the Main Sequence in the Hertzsprung-Russell diagram?

Back

It represents the relationship between a star's luminosity and its temperature.