The Cycle of the Moon

The video explains the relationship between Earth and its satellite, the moon. It covers the moon's orbit around Earth, which takes 27 and one-third days, and the concept of a lunar month lasting 29 and a half days. The video also discusses the moon's phases, which are caused by the changing positions of the Sun, Earth, and Moon. A review section includes questions about the moon's orbit and the factors affecting its appearance.

How many days does it take for the moon to orbit the Earth?

• 25 1/2 days

• 27 and a third days

• 30 days

• 33 days

What is the duration of a lunar month?

• 32 days

• 29 1/2 days

• 15 1/2 days

• None of the above

What causes the moon to appear to change shape in the sky?

• The position of the moon

• The position of the sun

• The position of the Earth

• All of the above

How many stages does the moon go through during a lunar month?

• 4 stages

• 10 stages

• 6 stages

• 8 stages

Which of the following is true about the moon's shape?

• The moon's shape changes due to the Earth's shadow

• The moon appears to change shape due to its orbit

• The moon's shape remains constant

• The moon changes its shape