Moon phases, eclipses and tides

How much of the moon is always illuminated?

• 50%

• 100%

• 0%

• 25%

Why do we see phases of the moon?

• The tilt of Earth's axis as it rotates.

• The moon lights different portions of its surface throughout the month.

• As the moon revolves around the Earth, we see different portions of the lit side.

• The moon revolves and rotates at the same rate.

The word "waxing" means

• to grow

• to shrink

• to wobble

• to rotate

What moon phase is pictured here?

• crescent

• quarter

• gibbous

• new

What moon phase is this?

• crescent

• quarter

• gibbous

• full

What moon phase is observed when the Earth is between the moon and the sun ?

• new moon

• quarter

• gibbous

• full moon

What moon phase occurs just before and after a new moon ?

• quarter

• gibbous

• full

• crescent

How long does it take for the moon to orbit the Earth?

• 1 day
• 1 week
• 1 month
• 1 year

How does a solar eclipse occur?

• Part of the Earth is in the moon's shadow.

• All of the Earth is in the moon's shadow.

• The Earth moves between the sun and moon casting its shadow on the moon.

• The moon moves into the Earth's shadow.

A lunar eclipse can occur only during the _________________.

• Full moon
• New moon
• Waxing moon