Exam 19: Light, Color, and Atmospheric Optics

How does adding particles to the atmosphere affect visibility?

What produces a sundog? Where and at what time of day should you look to try to see a sundog?

When the sun is near the horizon,the intensity of visible radiation reaching the earth's surface appears to be less than when the sun is directly overhead.Actually,the intensity of the visible radiation reaching the earth's surface is always the same.

Because of atmospheric refraction,a star seen near the earth's horizon is actually

Sketch the path that a ray of light follows as it passes through a raindrop and forms a primary rainbow.How is the path of a ray forming the secondary rainbow different?

If the setting sun appears red,you may conclude that

At sunset in the middle latitudes,look for a rainbow toward the

Which of the following is not caused by diffraction of light?

Clouds in the tropics tend to move from east to west.Consequently,which rhyme best describes a rainbow seen in the tropics?

Secondary rainbows occur when

This phenomena can sometimes be seen near the upper rim of a setting or rising sun:

With a sketch,show why the setting sun will often appear red to an observer on the ground.Why does the sun appear white at noon and red at sunrise and sunset?

The green flash is largely an example of ____ of light by the earth's atmosphere.

Suppose you took a color photograph of clouds at night,with your camera adjusted so that the shutter stayed open long enough to allow enough the same amount of light that would enter the camera during a daytime photograph.On the resulting photograph,the clouds should look

Which atmospheric phenomenon below is produced by the diffraction of light around small water droplets?

What phenomena cause a road surface to appear to be wet on a hot,clear,dry day? Why does the road appear to be wet? How would the road appear if it really were wet?

Which of the following are capable of producing a red sunrise or sunset?

Distinguish between the processes of reflection,refraction and scattering of light.

An atmospheric phenomenon that causes objects to appear inverted is called

A wet-looking road surface on a clear,hot,dry day is an example of