MoodleMootVirtualConference2011Sandbox

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code [questions=on] Here is a test question. What makes the sky blue? Sunlight ;; Yes, the sky would not be blue without sunlight. Lack of clouds ; No, the sky is black at night even when there are no clouds.

What makes the sky orange? Sunlight ; No. Although sunlight is required, it is not what makes the sky orange. The sky only looks orange at certain times of the day. Clouds or dust in the air ;; Yes, sunlight is white. The dust scatters the blue light and lets through the red light.

[questions=off] http://www.sciencemadesimple.com/sky_blue.html Learn more at science made simple dot com. code