How are sounds made?
Sounds are made when things __________.
Vibrate
What word do we use to describe how loud or soft a sound is?
Volume
How can you make a note higher-pitched on a string instrument?
Shorten the string
What do you call the part of your experiment that always stays the same?
Control variable
Sound vibrations travel in ___________.
Waves
What unit do we use to measure volume?
decibels
How can we make the pitch lower on a wind instrument?
Put down more fingers to lengthen the pipe.
What do you call the part of the experiment that YOU change?
Independent variable
Guitar string vibrate when you ________ them.
Pluck
What word is used to describe how low or high a sound is?
Pitch
What do people wear to protect their ears?
Ear defenders
What do you call the variable where you measure the effect of the experiment?
Dependent variable
If the sound waves are close together, the pitch is _________.
High
A slow vibration makes a ____________ sound
low-pitched
What is it called when we reduce the volume of a sound we don't want to hear?
Muffle
In our experiment with the clock and the tube, what was the control variable?
The tick of the clock
If the amplitude is low, the volume is _______.
A fast vibration makes a ___________ sound.
High-pitched
Microphone, amplifier, loudspeaker
In the experiment with the clock and the tube, what was the dependent variable?
The volume of the tick