"The Curved Moon" PPT

"The Curved Moon" PPT

Part 1 content: Activity 1: Understand the phases of the moon

Looking at the moon from the earth, the moon is sometimes round and sometimes missing. The shape of the bright part of the moon's surface that people see is called the moon phase.

think about it

Which way does the moon turn? How long is the rotation period?

The moon doesn't shine, so what's going on with that bright moonlight?

As the moon rotates around the earth, how do the positions of the moon, the earth, and the sun change?

Part 2 content: Classroom experiment

Through experiments, we found that the changes in the moon phase are related to the positions of the sun, the earth, and the moon.

During the revolution of the moon, the side of the moon illuminated by the sun sometimes faces the earth, sometimes faces away from the earth, and sometimes partially faces the earth. This is how the moon phase changes.

The moon is a satellite of the earth. It orbits the earth from west to east, and the time for one revolution is about one month of the lunar calendar. The moon itself does not emit light; it shines by reflecting sunlight. While the moon revolves around the earth, the earth drives the moon to revolve around the sun.

Therefore, the side of the moon illuminated by the sun will sometimes face the Earth, sometimes face away from the Earth, and sometimes partially face the Earth. This is how the moon phases change.

Part 3 content: Activity 2: Test you

1. The moon is a satellite of ______. It _____________ revolves around the earth, and the time for one revolution is about ____________.

2. The moon itself does not ______, but relies on _________ to shine.

3. When the moon rotates around ____, the earth rotates around the sun with ____. Therefore, the side of the moon illuminated by the sun will sometimes _____ the Earth, sometimes face away from _____, and sometimes partially face the Earth. _____This is how change happens. Simply put, the moon phases are caused by changes in the relative positions of the moon, earth and sun.

Part 4: After-class exercises

1. The moon phase changes because the shape of the moon is changing. ( )

2. The moon phases are formed due to changes in the area of ​​the moon that receives sunlight. ( )

3. The moon phase changes are cyclical, and the moon phase change cycle is the time it takes for the moon to make one revolution. ( )

4. At dusk every day, the moon will appear in the east of the sky. ( )

5. The moon phase changes because the side of the moon facing the sun becomes larger and smaller. ( )

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