exercise 6

On a normally sunny day with a blue sky, what percentage of the light comes from the blue sky?

20

When you look at a rainbow, compared to the sky outside the rainbow, the sky inside the rainbow looks

lighter

The preferential scattering of blue light causes the sky to be blue and the sunsets red. If the scattering by air molecules anddust was independent of wavelength (no preferential scattering) the color of the sky would be

white

If you observe a white-light flashlight by looking directly through a water-filled container that is milky colored with milk droplets, the flashlight color is

yellow-red

If red (instead of blue) light was preferentially scattered, the sunsets would appear

blue

The presence of colors in a rainbow shows the inner ring is

blue

The sunsets appear red because of preferential scattering of

blue

When you look at a rainbow, compared to the sky inside the rainbow, the sky outside the rainbow appears

darker

The color sequence (red -> blue) of a rainbow would change if

none of the above

The observer's shadow is the center of the arc of the

rainbow