WONDER #1576: How Do Hearing Aids Work?

Question 1 of 3

Which of the following parts of a hearing aid increases the power or volume of sounds?

1. microphone
2. amplifier
3. speaker
4. battery

Question 2 of 3

Most hearing aids sold today in the United States feature what type of technology?

1. analog
2. digital
3. 3D
4. HD

Question 3 of 3

Which of the following is NOT a type of hearing aid?

1. BTE
2. CIC
3. ITC
4. EAR

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