Properties of Sound

Question 1

A reflected sound wave would be an…

Answer 1

Echo

Question 2

Pitch is the…

Answer 2

Perception of the frequency of a sound. It describes about how high or low the sound seems to a person.

Question 3

High Frequency =
Low Frequency =

Answer 3

1. High Pitch
2. Low Pitch

Question 4

Loudness is…

Answer 4

How loud or soft a sound is perceived to be.

Question 5

What is loudness affected by and what is it measured in?

Answer 5

It is affected by amplitude and measured in decibels (dB).

Question 6

Both formulas for v (speed of sound in air)

Answer 6

Distance / Time
d/t

Wavelength / Period
lambda/T

Question 7

Echoes are used for…

Answer 7

Navigation, Radar, Sonar

Question 8

Vibrate slowly = Low/High Pitch
Vibrate quickly = Low/High Pitch

Answer 8

1. Low pitch
2. High Pitch

Question 9

String Tightened = Low/High Pitch
String Loosened = Low/High Pitch

Answer 9

1. High Pitch
2. Low Pitch

Question 10

Thick String = Low/High Pitch
Thin String = Low/High Pitch

Answer 10

1. Low Pitch
2. High Pitch

Question 11

Long String Vibrate = Low/High Pitch
Short String Vibrate = Low/High Pitch

Answer 11

1. Low Pitch
2. High Pitch

Question 12

Loudness is characterized by

Answer 12

High volume and intensity.

Question 13

The larger the amplitude of the wave on the trace, the…

Answer 13

Louder the sound.

Question 14

The bigger the waves you can see, the…

Answer 14

Louder the sound.