Chp4B waves

In order for there to be sound, matter has to 

• be still

• be absent

• vibrate

• none of the above

A colorless, transparent object 

• blocks light

• transmits light 

• moves light 

• reverses light

To see all the colors in the visible spectrum, your eyes need to sense only 

• one color

• two colors

• three colors 

• six colors

The sensation you get when very little light of any color enters your eyes is of

• black

• white

• rainbows

• ultraviolet

Humans can hear sounds with frequencies from 

• 0-20 hertz

• 20-20,000 hertz

• 20,000-30,000 hertz

• 30,000-100,00 hertz

When sound bounces off a smooth surface, it creates

• an ultrasound.

• music.

• an echo.

• noise.

The top note of a musical sequence has twice the frequency of the bottom note in 

• an octave.

• a phrase.

• a range.

• a solo.

The arrow is pointing to the wave's

• trough.

• crest.

• wavelength.

• amplitude.

This picture is of the waves produced by 

• fiber optics.

• flashlight.

• fluorescent light.

• laser light

Josh put a small cup in the bottom of a filled fish tank and tried to drop a penny in it. When he looked down into the tank to drop the penny in the cup, he had to allow for

• refraction.

• reflection.

•  a tranverse wave.

• amplitude.