Question

You have been studying what causes day and night. You know that the rotation of Earth on its axis is what creates the different amounts of light during the day. In the winter, it is dark first thing in the morning and dark in the mid-afternoon. There is very little daylight. In the summer, it gets light early in the morning and is light until well after dinner. The amount of daylight changes with the seasons. This change is due to where Earth is in its orbit around the sun.

Now that you’ve learned about Earth’s rotation and the apparent, or supposed, movement of the sun, explain why the shadow on a sundial changes throughout the day. Write a paragraph to explain your answer to your Learning Guide. Be sure to include the following:

· Relate Earth’s rotation to the apparent movement of the sun.

· Describe how the angle of the sun changes throughout the day.

· Explain how the changing angle of the sun affects shadows.

Answer 1

Question:  Relate Earth’s rotation to the apparent movement of the sun.

Answer: The apparent motion of the sun, caused by the rotation of the Earth about its axis, changes the angle at which the direct component of light will strike the Earth. From a fixed location on Earth, the sun appears to move throughout the sky. ... Path of the sun in the southern hemisphere.

Question: Describe how the angle of the sun changes throughout the day.

Answer: The Earth's spin axis doesn't point at 90 degrees to the Sun. Because of this, the Northern Hemisphere is tilted towards the Sun in the Northern Hemisphere's summer and tilted away during winter. This tilting causes the seasons. ... Instead, it's all about the angle of the Sun's rays on the Earth.

Question: Explain how the changing angle of the sun affects shadows.

Answer: Image result for Explain how the changing angle of the sun affects shadows.

Similarly, in the winter, the angle of the sun drops lower casting less concentrated heat and longer shadows. Just as the sun's proximity to earth directly affects the surface temperature, the angle of the sun also dictates the length of shadows.

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