Sound & Light

The three classes of instruments are ...?

• Percussion, string & drum

• Percussion, string & wind.

• Whistle, drum & wind

• String, whistle & percussion

Name 1 instrument from each class of instrument.

Click word associated with definition, "How fast sound travels"

• Speed of sound

• Sound

• 300 m/s

... is the unit of frequency of a sound

... tells you how loud a sound is

The time for one compete vibration of a sound is called a ...

What is the range of frequencies humans can hear?

• 20 - 20.000 Hz

• 10 - 10.000 Hz

• 15 – 17.000 Hz

• 18 - 18.000 Hz

Can sound waves travel in space?

• Yes

• No

What is needed for sound to travel?

• A solid

• A gas

• A fluid

• Any substance that can vibrate

What is the substance that sound uses to travel called?

• The medium

• Soundwave o'matic 1000

• Wave

• Oscilloscope