eccentricity review (you need your ESRTs!)

Front

What is eccentricity?

Back

A measurement of how elliptical an orbit is.

Front

The farther away a planet is from the sun, the _______ it takes it to orbit the sun once.

Back

Longer.

Front

At which position is the gravitational attraction between the star and the planet greatest?

Back

Position A.

Front

Velocity means:

Back

Speed.

Front

What is the eccentricity of the Earth's orbit around the Sun?

Back

0.017.

Front

What does a higher eccentricity value indicate about an orbit?

Back

It indicates a more elongated (elliptical) orbit.

Front

What is the range of eccentricity values for orbits?

Back

0 to 1.

Front

What does an eccentricity of 0 represent?

Back

A perfect circular orbit.

Front

What does an eccentricity of 1 represent?

Back

A parabolic trajectory.

Front

How does eccentricity affect the speed of a planet in its orbit?

Back

Planets move faster when they are closer to the star and slower when they are farther away.