Modern Astronomy Review

Front

What are the moon phases when they are waning?

Back

The moon phases are waning when they go from full moon to new moon.

Front

What is the term for a planet turning on its axis?

Back

The movement is called rotation.

Front

What does it mean if a galaxy is moving away from us?

Back

It indicates that the galaxy is receding from Earth.

Front

What does a redshift in spectral lines indicate?

Back

A redshift indicates that the star is moving away from Earth.

Front

What is the path a planet travels around the sun called?

Back

The path is called its orbit.

Front

What is the difference between rotation and revolution?

Back

Rotation is the spinning of a planet on its axis, while revolution is the orbiting of a planet around the sun.

Front

What is the significance of the barycenter in a planetary system?

Back

The barycenter is the center of mass around which two or more bodies orbit.

Front

What is precession in astronomy?

Back

Precession is the gradual shift in the orientation of an astronomical body's rotational axis.

Front

What is the blue shift in spectral lines?

Back

A blue shift indicates that an object is moving toward the observer.

Front

What are the main components of our solar system?

Back

The main components include the sun, planets, moons, asteroids, comets, and meteoroids.