If you mix red light with green light you got _________ light

If you mix red light with green light and blue light you got __________ light.

Whenever two colors of light are mixed, the new color is ____________ than the old one.

When you mix no red, green, or blue light, you see ________________ light.

What you learned in class about color mixing can help

you think about movies and about _______________.

When you mixed ______________, you ended up with a new color.

Using two sources, you mixed red light with green light and got yellow. When you added blue light from a _________ source, you got white.

People see different colors. The retina, in

the back of the ___________, contains cells that are

sensitive to light.

MOST HUMANS CAN SEE MANY DIFFERENT COLORS.

MANY INSECTS AND ANIMALS DON'T SEE COLORS LIKE HUMANS.

MOST PEOPLE WHO ARE COLORBLIND LIVE NORMAL LIVES.

The transparent covering of the eye is called the

The black part of the eye through which light enters is called the

You have learned how camera film and televisions combine only three colors of light to make all the colors that your eye can see. For example, you know that red and green light can mix to make yellow ____________.

Any color can be represented as a mixture of red, green, and blue light. Film needs __________ layers, because each layer is sensitive to one of these three colors of light.

A shadow is an area that is not lit up, because light is blocked from getting there.

When no light is present, we see ___________.

Color film and the CCD are inventions that allow you to record colored light.

Some televisions have “guns” near the back that send tiny particles called electrons toward the screen.

The inside surface of a television screen is coated with very

small dots. When an electron hits a ___, it makes a weak flash of light.

Mixing different colors of light is not the same as mixing the same colors of paint. When colors of light are mixed, nothing new is created.

When more light reaches the eyes, we interpret the object we are looking at as being brighter.

When light shines on an object, it is reflected, absorbed, or transmitted through the object, depending on the object’s material and the frequency (color) of the light.

A wave model of light is useful for explaining brightness, color, and the frequency dependent bending of light at a surface between media.

The pupil is like a window into the eye that is covered by very high- quality, flexible, transparent, and smooth material.

The retina is full of small cells that are sensitive to light.

Red and green cones in the eyes are equally sensitive to yellow light, so when it enters the eye, red and green cones

both send signals to the brain, and the brain interprets the signals as yellow.

When different colored lights are mixed, they appear as a new color, brighter than the original colors.

White light is a mixture of all colors of light—it is the brightest color. Black is the color associated with the absence of light.

Why does there need to be three layers in color film?

Why do the layers in the film need to be transparent to all colors other than the one it absorbs?

Each type of cone cell detects a different color of light. What are the three colors of light the cone cells in the retina are sensitive to?

When you are in a dark, but not completely dark room, it is impossible to detect the colors of objects in the room. Everything seems to be different shades of gray. Explain why you can only see shades of gray.

How is the design of the CCD of a digital camera similar to the retina of the human eye?

Why does the pupil open wide in the dark and narrow down in bright light?

Why does the pupil look black?

When you mixed colors from two sources, the new color was brighter.