Exam 15: Light, Color, and Atmospheric Optics

Instructions: Choose one answer from each pair of selections. The most common type of halo is the 22° | 46° halo.

Illustrate with a sketch the refraction and dispersion of light as it passes through a glass prism.

The bending of light as it passes around objects is referred to as ____.

When no visible radiation strikes the rods or cones in the human eye, a surface will appear ____.

Halos are caused by ____.

Because of refraction, a star appears to be higher in the sky than it actually is.

The blue color of the sky is due to ____.

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?

How does light create a rainbow?

Why does adding particles to the atmosphere affect visibility?

Scattered light is also referred to as ____.

A bright, yellow-orange sunset will occur when the atmosphere ____.

An object that we see as red ____ all visible radiation except red.

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

If the temperature was constant at the surface of the atmosphere, conditions would be ____ for viewing a mirage.

On a summer evening at middle latitudes, twilight adds about how much extra time of light to the evening?

A blue sun or blue moon occurs when the size of suspended particles in the atmosphere is ____ the wavelength of visible light.

Instructions: Choose one answer from each pair of selections. A tangent arc may sometimes be seen above a HALO | SUN PILLAR.

Instructions: Choose one answer from each pair of selections. The sun often appears redder as it sets, which means that MORE | LESS blue light is scattered as the sunlight passes through the atmosphere.

Red sunrises and sunsets over the oceans may be produced by light ____.