Author Question: Hearing is expressed in decibels (dB), or units of loudness. Which is the softest sound a normal ear ... (Read 57 times)

ap345

  • Hero Member
  • *****
  • Posts: 537
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

Question 2

The nurse should suspect a hearing impairment in an infant who demonstrates which behavior?
 
  a. Absence of the Moro reflex
  b. Absence of babbling by age 7 months
  c. Lack of eye contact when being spoken to
  d. Lack of gesturing to indicate wants after age 15 months



mfedorka

  • Sr. Member
  • ****
  • Posts: 324
Answer to Question 1

ANS: A
By definition, 0 dB is the softest sound the normal ear can hear. Ten dB 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.

Answer to Question 2

ANS: B
The absence of babbling or inflections in voice by age 7 months is an indication of hearing difficulties. The absence of the Moro reflex and eye contact when being spoken to does not indicate a hearing impairment. The child with hearing impairment uses gestures rather than vocalizations to express desires at this age.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

For a complete list of videos, visit our video library