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The figure shows the Moon at eight positions in its orbit around the Earth, with sunlight coming from the right. At which position will people on Earth see a full moon?
On a full moon day, at about what time does the Moon rise?
Taking one lunar month as 29.5 days, how many days are there in 4 lunar months?
Why is the Moon not seen in the sky on a new moon day (Amavasya)?
Among the stars, the Moon moves eastward by about 13.2° per day, while the Sun appears to move eastward by about 1° per day. Using these values, estimate the number of days from one new moon to the next (to one decimal place).
Explain why the Moon shows phases. Describe the positions of the Sun, Earth and Moon on a new moon day, on a first quarter (half moon) day and on a full moon day.
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