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Reason: Draw dots on the graph below using the “duration of daylight” data from slide 3.

Draw stars to mark the start of the four seasons.

Length of Day Part 2

Name:____________________________ 6.1.1 Reasons for the Seasons

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Communicate:

After analyzing the “Duration of Daylight” chart and graphing the data...

How does the amount of daily sunlight change over the year?

How does the length of night change over the year?

When is the longest day of the year?

When is the shortest day of the year?

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Mrs. Moro’s students checked the newspapers every morning for the times of sunrise and sunset. They used this information to determine the number of hours of daylight The class started this project in September, and by November they could see that the days were getting shorter and shorter. The students asked their families and neighbors to explain why days get shorter as winter approaches in the North. Here are the ideas they came to class with the next day.

Frank: “My mom says it’s because of daylight saving time.”

Jubal: “My sister said Earth's tilt causes the Sun to be farther away in winter.”

Sybil: “My father thinks the angle of sunlight must be the cause.”

Carter: “My brother says the Sun moves across the sky faster in winter.”

Wendy: “My neighbor thinks the Sun’s path in the sky gets shorter in winter.”

Shorter Days in Winter

Which student came to class with the best idea? Why do you think that is the best idea?