Semester Review: Astronomy

Front

What is the phase of the moon when it is less than half illuminated and increasing in illumination?

Back

Waxing crescent.

Front

What happens to the gravitational force between two objects as the distance between them increases?

Back

The gravitational force decreases.

Front

How long does it take for the Earth to complete one full rotation on its axis?

Back

24 hours.

Front

What is the primary force that keeps the planets in orbit around the Sun?

Back

The Sun's gravitational pull.

Front

What is the phase of the moon when it is more than half illuminated and increasing in illumination?

Back

Waxing gibbous.

Front

What is the term for the path that a celestial body follows as it moves around another body in space?

Back

Orbit.

Front

What is the name of the force that attracts two bodies towards each other?

Back

Gravity.

Front

What is the phase of the moon when it is completely illuminated?

Back

Full moon.

Front

What is the phase of the moon when it is not visible from Earth?

Back

New moon.

Front

What is the average distance from the Earth to the Sun?

Back

Approximately 93 million miles (150 million kilometers).