Sound Energy

What is sound?

• Light waves

• Vibrations that travel through a medium

• Electrical signals

• Radiowaves

Which of the following is NOT a medium through which sound can travel?

• Air

• Water

• Light

• Solid objects

What units are used to measure the amplitude of sound?

• Watts

• Decibels

• Hertz

• Meters

What units are used to measure the frequency or pitch of sound?

• Watts

• Decibels

• Hertz

• Meters

What is the range of human hearing?

• 1Hz to 10Hz

• 20Hz to 20,000Hz

• 100Hz to 1,000Hz

• 10,000Hz to 100,000Hz

Which of the following can cause damage to our hearing?

• Listening to loud music through headphones

• Eating too much sugar

• Watching too much TV

• Drinking too much water

What is the instrument used to measure sound waves called?

• Oscilloscope

• Microscope

• Telescope

• Spectroscope

What is the minimum age for hearing damage to occur?

• 5 years old

• 10 years old

• 16 years old

• There is no minimum age

What percentage of year 9 students have been found to have damaged or abnormal hearing?

• 10%

• 25%

• 34%

• 50%

What can we do to protect our hearing?

• Listen to music at maximum volume

• Use earplugs in noisy environments

• Ignore any signs of hearing loss

• None of the above