Asked by Shashank Gupta on Jun 22, 2024
Verified
Hearing is expressed in decibels (dB) , or units of loudness. Which is the softest sound a normal ear can hear?
A) 0 dB
B) 10 dB
C) 40 to 50 dB
D) 100 dB
Decibels
A unit of measurement for the intensity of sound, indicating the pressure level of a sound wave.
Sound
Vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear.
Normal Ear
An ear that has the correct anatomical structure and functions properly, with the ability to hear within standard hearing ranges.
- Acknowledge and handle the care demands and safety precautions for children who have hearing deficits.
Verified Answer
RS
RYLEIGH STRONGJun 24, 2024
Final Answer :
A
Explanation :
By definition, 0 dB is the softest sound the normal ear can hear. Ten decibels is the sound of the heartbeat or the rustling of leaves. 40 to 50 dB is in the range of normal conversation. The noise of a train is approximately 100 dB.
Learning Objectives
- Acknowledge and handle the care demands and safety precautions for children who have hearing deficits.
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