Thing 1
Thing 2
Thing 3
100
How does light travel?

What is in a straight line.

100

Another word for blurry.

What is translucent?

100
This turns what you see right side up.

What is the brain?

200

This is made with a thick layer of smooth metal and a layer of paint.

What is a mirror?

200

Another word for when light is blocked.

What is opaque?

200

This determines how much light passes into your eye.

What is the pupil?

300

This is made combining a thin layer of film and a piece of glass or plastic.

What is a one-way mirror?

300

The colored part of the eye.

what is the iris?

300

Electrical signals from the retina travel through this.

What is the optic nerve?

400

This is made of a very thin layer of silver, aluminum, tin, or nickel.

What is one-way mirror film?

400

This part of the eye helps focus the light so you can see better.

What is the lens?

400

Another word for bounces off of something.

What is reflect?

500

Another word for see through.

What is transparent?

500

The lining of the back of the eye with about 130 million tiny cells.

What is the retina?

500

When light passes through an object it is called this.

What is transmits?
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