Astronomy 20-2

The moon revolves in which direction?

• clockwise

• counter clockwise

The orbit of one object around another object is called...

• Rotation

• Revolution

About how many days does it take to moon to go through a complete cycle?

• 7 days
• 365 days
• 29 days
• 20 days

When the visible (lit) portion of the moon is increasing, the moon is:

• waning
• full
• waxing
• new

When the Earth is between the moon and sun, it is most likely a:

• new moon
• full moon
• waxing crescent
• waxing gibbous

Approximately how much time passes between the new moon and full moon?

• one month
• two weeks
• 3 days
• 24 hours

Changes in the moon's appearance are

• phases
• eclipses
• stages
• cycle

What causes the moon's phases

• Where you are standing on Earth

• the amount of sunlight reflected onto the moon from the sun

• The tilt of Earth

• how fast the moon is moving

As the moon moves from a new moon to a full moon, you see:

• the moon appearing increasingly lighter
• The amount of light the moon is receiving decreasing
• the amount of light the moon gets staying constant
• more light and then less light

Why do we always see the same side of the moon from Earth?

• because the phases change
• because it rotates and revolves at the same rate
• because half of the moon always receives sunlight
• The moon changes positions