Noise Pollution Practice Exercise

What is the unit that is used to measure the intensity of sound?

• decibel

• frequency

• Hertz

• wavelength

Which of the following are considered as the two main parts of the auditory system? Pick two answers.

• brain

• ear

• eyes

• spinal cord

What are the three tiny bones in the middle ear? Check all that applies.

• anvil

• cochlea

• hammer

• stapes

What do you call the minimum sound level of a pure tone that an average normal human ear can hear?

• noise

• sound

• threshold of hearing

• threshold of pain

Sound is any vibration that is deemed unpleasant or unwanted upon hearing.

• True

• False

The generally accepted standard to minimize hearing risk is based on an exposure to 70 dB for a maximum limit of eight hours per day

• True

• False

Which of the following is the approximate relative intensity of your normal breathing sound?

• 0 dB

• 10 dB

• 20 dB

• 30 dB

According to CapTel, which of the following is the approximate relative intensity of a soft whisper nearby?

• 0 db

• 10 dB

• 20 dB

• 30 dB

According to the study of World Health Organization, among teenagers and young adults, aged 12-35 years old, around 50% are exposed to unsafe levels of sound from _____.

• damaging sounds of concerts

• transportation sounds

• daily exposure to television sound

• personal audio devices

Tags

NGSS.MS-LS1-8

According to WHO, which of the following is the approximate range of relative intensity of our personal audio devices (e.g. airpods, headphones, etc.)?

• 0-70 dB

• 75-136 dB

• 100-120 dB

• 200 dB up