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Motion and Phases of the Moon

• Approximately how large is the Moon compared to the Earth?
• How far is the Moon from the Earth in terms of the Earth's size?
• If you were standing on the Moon, how would you see the Earth move?
• Why do we see only part of the Moon during a quarter Moon phase?
• When do we say that the Moon is "new"?
• If at a certain date and time the Moon is new, how long will it be until full Moon?

Phases of the Moon and Time

• At what time of the day can you see the Moon if it is waxing?
• If the Moon is high in the sky at sunset/sunrise, what can you conclude?
• If the Moon is full and near the Western horizon, what time of the day is it?
• At what time will a full Moon rise? When will it be highest in the sky?

Lunar Eclipses

• What causes a lunar eclipse to occur?
• When a lunar eclipse occurs, what phase does the Moon have to be in?
• Why is the Moon not totally dark during a lunar eclipse?
• If a lunar eclipse occurs, from where on Earth can it be seen?

Solar Eclipses

• What causes a solar eclipse to occur?
• When a solar eclipse occurs, what phase does the Moon have to be in?
• When is a solar eclipse annular rather than total?
• What determines whether a solar eclipse is annular or total?
• How long does a total solar eclipse usually last?
• Why aren't there lunar and solar eclipses every month?
• If you see a solar eclipse on a certain day, how long will it be until the next one?