Show:
Loudness
Pitch
Volume
Doppler effect
Amplitude
100
What is loudness
it describes your perception of the energy of a sound.
100
What is pitch
The pitch a sound is a description of how high or low the sound of someone seems to a person
100
What is volume
the measure of how loud or soft a sound is
100
what is the Doppler effect?
When a sound source moves, the frequency of the waves change because the motion of the source adds to the motion of the waves
100
what is amplitude
the height of a wave
200
what 2 factors does loudness depend on
energy to make the sound and the distance from the sound source
200
if the amplitude of a sound wave is high is it a high pitch or low pitch
high pitch
200
What is volume measured in?
decibels (dB)
200
Who hears the fire siren louder, the people in front of it or behind it
in front of the siren
200
The _____ the sound the _____ the amplitude
louder,taller
300
loudness is what you...
Hear
300
’The pitch of a sound is a description of how ____ or ___ the sound of someone seems to a person.
High or Low
300
How loud is a whisper
15-20 (dB)
300
What does the Doppler effect change?
the frequency of a wave
300
Does a whisper have a tall amplitude or low?
Low
400
loudness depends on ___ factors
2
400
The pitch of a sound that you hear depends on the _______ of the sound wave
frequency
400
how loud is a jet engine?
120 (dB)
400
how does the frequency change?
the frequency of the waves change because the motion of the source adds to the motion of the waves
400
Does a shout have a low or high amplitude
high
500
True or False loudness is an important property of sound
true
500
what is pitch?
’The pitch of a sound is a description of how high or low the sound of someone seems to a person.
500
If a sound is ______ decibels it can cause damage to ears
85 (dB) and up
500
who would hear a police siren more, people in high balconies or people on the ground behind it
down on the ground
500
what has a higher amplitude. A. airplane B. train
airplane