Rainbow exist because light is

refracted and reflected

a diver shines light up to the surface of a smooth pond at a 50 degree angle to the normal. what is true about the light that reflects back to the water?

all of it reflects back into the water

the type of lens that bring parallel light together is a

converging len

when the light goes from air to glass prism, the color that refracts the least is


when you view a distant rainbow, you view from each single water drop that contributes to the bow

a single color

The fact that light travels at 300,000 km/s is a consequences of

energy conservation

list in order of decreasing wavelength

radio, infrared, visible, ultraviolent, gamma ray

What is the frequency of an electromagnetic wave that has a wavelength of 30,000 km?

10 Hz (300,0000/(30,000)

electromagnetic waves consist of

oscillating electric and magnetic fields

the main difference between a microwave and a light wave is its


the cones in the retina of the eye are

most densely packed at the center of vision

consider light energy that is momentarily absorbed in the glass and then remitted. compared to the absorbed light, the frequency of the remitted light is

the same

when infrared light is incident upon the clear glass, atoms in the glass

all the above - resonate, are forced into vibration and collide with other atoms, and convert the light energy into internal energy

the size of the pupil of your eye depends on

your mood and the brightness of light in room

red - hot and blue -hot stars appear white to the eye because

they are too dim to fire the cones

the human eye is the most sensitive to which portion of the EM spectrum

yellow and green

which colors of ink are used to print full color picutures

magenta, cyan, and yellow plus black

the whiteness of clouds is evidence in the clouds for a variety of

particle size

the color of an opaque object is the same as the light that is


yellow light is really a mixture of

red and green light

light refracts when traveling from air to glass because light

has greater speed in air then in air

object and image for a plane mirror lie

equal distance from the mirror

the amount light reflected from the front surface of a common windowpane us about

4%, comes back at you at 92%

a mirage occurs for a road surface that are


the path of light travels from one point to another will be the path that

takes the least time

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