Earth-Sun-Moon: Lunar Phases

Where does moonshine come from?

• Moon creates its own light
• From reflected sunlight
• From reflected earthshine
• From refracted starshine

How does the Moon move relative to the Earth and Sun?

• Moon revolves around Sun
• Moon revolves around Earth
• Earth revolves around Moon
• Moon rotates around Sun

What does the word "lunar" mean?

• Related to the Moon
• Related to the Sun
• Related to the Earth
• Related to eclipses

What causes the Moon to change phases throughout the month?

• Earth's shadow on the Moon
• Earth seeing the Moon from different angles
• Sun's shadow on the Moon
• Moon's shadow on the Earth

What does "waxing" mean?

• Become larger, stronger, brighter
• Become smaller, weaker, dimmer
• Rotate
• Revolve

What is a "gibbous" shape?

• Half circle
• Less than half circle
• More than half circle
• Full circle

Is there a "dark side" of the Moon, the same side that is always in darkness?

• Yes, of course
• No, it's a myth

How much of the Moon's surface is lit by the Sun?

• 100% (all of it)
• 50% (half of it)
• 25% (quarter of it)
• It changes between 0-100%

From Earth, why do we always see the same side of the Moon?

• Moon doesn't rotate
• Earth's rotation is faster than Moon's
• Moon's rotation is same speed as its revolution
• Moon's rotation is faster than Earth's

Roughly once a month, during the Full Moon, why do we not always see a lunar eclipse?

• Earth's tilted axis
• Earth's tilted orbit
• Moon's tilted orbit
• Moon's tilted axis