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.