The Science of Sound | Science Trek

What are sound waves made by?

• Large vibrations

• Small vibrations

• Light waves

• Chemical reactions

What is the height of a sound wave called?

• Pitch

• Decibel

• Amplitude

• Frequency

What unit is used to measure sound frequency?

• Lumens

• Decibels

• Hertz

• Watts

What is the range of sound frequency that humans can hear?

• 
  30 to 30,000 Hertz

• 20 to 20,000 Hertz

• 40 to 40,000 Hertz

• 10 to 10,000 Hertz

What is the measure of a sound's pressure or loudness?

• 
  Frequency

• Hertz

• Amplitude

• Decibels

What is the decibel level of a toilet flush?

• 80 decibels

• 200 decibels

• 67 decibels

• 10 decibels

What should you do to protect your hearing from loud sounds?

• Wear ear plugs

• Stand closer to the sound

• Increase the volume

• Ignore the sound