A
B
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D
100
What is the word for what we hear when something vibrates?
Sound
100
What does sound need to travel?
Matter (solid, liquid, or gas)
100
What is the word for moving quickly back and forth?
Vibration
100
What is pitch?
How high or low a sound is.
200
What does it mean to stop or reduce sound?
Soundproof
200
Name all five sense organs.
1) Ears
2) Nose
3) Tongue
4) Skin
5) Eyes
200
A thicker string vibrates slower and makes a _______ pitch.
lower
200
A student covers their ears in a noisy classroom. What part of sound would they like to change?
Volume
(how LOUD or quiet a sound is)
300
What are these examples of?
Sources of sound.
300
What piece of equipment can measure volume?
Sound meter
300
Sound travels the fastest through which state of matter?
Solid.
300
Why would a room have walls like this?
It helps absorb sounds to make the room soundproof.
300
A musician is playing a drum. What can she do to change the volume of the drum?
Hit the drum harder (for a louder sound) or softer (for a quieter sound).
300
What is the source of sound on a guitar?
The strings.
300
Why does sound travel through solid matter the fastest?
The particles in solid states of matter are closer to each other than in liquid and gas.
300
Sound can travel through which states of matter?
Solid, liquid, and gas
400
Police sirens, fire alarms, and crying babies are all examples of what kind of pitch?
High pitch
400
How is it possible for two people to talk and hear each other using two cups and a string?
The string carries the vibrations of the person's voice.
400
A musician plays music across the park. What can you do if you want to hear it better?
Move closer to increase the volume.
400
Which instrument makes the highest pitch?
The one on the left because smaller things make sounds with a higher pitch.
400
Why do guitars have strings of different thickness (size)?
To change the pitch of the sound.
Thicker / bigger = lower pitch
Thinner / smaller = higher pitch
400
What does this poster mean?
Space is empty. There is no matter for sound vibrations to travel though.
400
What is the unit of measurement for volume and its symbol?
decibel (dB)
400
Two students are arguing. One says sound travels as waves. The other says it travels as vibrations. Who is correct?
They are both correct. But sound waves are created by vibrations so "vibrations" is the mostest correctest.
500
Explain how whistling makes noise.
Blowing air through the small hole of the mouth makes it vibrate. Changing the shape of your mouth will change the pitch.
500
How does this instrument make sounds?
The air inside the instrument is vibrating. Pulling the slide down increases the air inside. More matter makes a lower pitch.
500
Using details and scientific words, explain what happens to volume when a pitch gets too high for humans to hear.
Nothing. Changing pitch does not change volume.
500
Why does your voice sound different when you are speaking and when you are listening to a recording of yourself?
When you speak you are vibrating your "voice box". You then hear vibrations in the air and vibrations in your skull. When you listen to a recording you only hear the vibrations in the air.