Properties of Light Waves
Parts of the Eye
Opaque, Translucent, Transparent
Electromagnetic Spectrum
Waves and Technology

100

A light wave hits a mirror and bounces off. What happened to the light wave?

It was reflected.

100

What does the lens do for the eye?

It bends and focuses light into an image that you can see.

100

A glass of water

Transparent

100

These waves are used to make images of bones and teeth in your body.

X-rays

100

Name a device other than a radio that uses radio waves to send signals.

Cell phone, walkie-talkie, television stations, Internet satelites

200

A light wave through a prism and was bent in a different direction. What happened to the light wave?

It was refracted.

200

What does the optic nerve do for the eye?

It sends messages about light to your brain to be decoded.

200

A cardboard box

Opaque

200

These waves are used to heat up your food.

Microwaves

200

What part of a radio takes in the radio waves?

Antenna

300

A light wave hits a piece of black cloth and is no longer visible. What happened to the light wave?

It was absorbed.

300

What does the pupil do for your eye?

It lets light into your eye.

300

Tissue paper

Translucent

300

These waves come from the sun and can damage your skin.

Ultraviolet waves

300

What part of a radio turns radio waves into a a message that we can hear?

Receiver

400

What causes a pair of pants to appear blue?

The pants reflect blue light but absorb all other colors of light.

400

What does the retina do for your eye?

It receives the image from your lens.

400

Most solids

Opaque

400

These waves are used to transmit information and music.

Radio waves

400

What part of a radio sends out radio signals?

Transmitter

500

Why does black clothing get warmer than white clothing in the sunlight?

Because it absorbs more sunlight.

500

Somebody suddenly turns out the lights in a room. What part of your eye will respond to this change?

The pupil

500

Name one thing in each category. You may not use previous answers.

Answers may vary.

500

These waves can be used to kill cancer cells.

Gamma rays

500

What are the two types of signals and which one does a computer use?

Digital and analog. Computers use digital.