Chapter 20 Practice Test

The Earth rotates in what direction?

• Clockwise
• Counter-clockwise

What caused the craters (the dents and holes) on the Moon?

• A. Volcanic activity on the moon
• B. The Moon’s lack of wind, water, and plate tectonics
• C. Ancient asteroid impacts
• D. Accumulation of lunar dust over time

During which phase is the Moon closest to the Sun?

• A. Waning Crescent
• B. First Quarter
• C. Full Moon
• D. New Moon

When the moon is in its waxing phases, which side will be illuminated?

• A. Right side
• B. Left side

What is the difference between a gibbous and a crescent phase?

• A. Gibbous phases are when the Moon is closer to Earth, while crescent phases occur when it is farther away.
• B. Gibbous phases are when more than half of the Moon is illuminated, while crescent phases are when less than half of the Moon is illuminated.
• C. Gibbous phases have a thin, curved shape, while crescent phases are round and full.
• D. Gibbous phases always happen during a lunar eclipse, while crescent phases occur during a solar eclipse.

What type of eclipse is this?

• A. Solar eclipse
• B. Lunar eclipse

Lunar eclipses can only be seen during which phase of the Moon?

• A. New Moon
• B. First Quarter
• C. Full Moon
• D. Third Quarter

The Moon is visible during the day as often as it is at night.

• A. True
• B. False

How much of the moon is always illuminated?

• The phase we can see from Earth is what is illuminated.
• The side of the moon we can see from Earth is always illuminated.
• Half of the moon is always illuminated.
• The entire moon is always illuminated.

What phase of the Moon is this?

• A. Waxing gibbous
• B. Full moon
• C. Waning gibbous
• D. Waning crescent