A2L Item 303

• Description:
• Goal:
• Source:
• Keywords: Waves

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The question for students:

The sky appears to be blue during the day because:

1. Air absorbs blue light less than any other frequency
2. Air molecules emit blue light after being struck by sunlight
3. The sky reflects blue light from the oceans
4. The temperature high in the Earth’s upper atmosphere is 1000K
5. None of the above

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Commentary for teachers:

No commentary available.

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