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6.2 Interference of sound
27 March 2023
Unit 6.3 Interference of sound
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Slide 1:
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Physics
Secondary Education
Age 12,13
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27 March 2023
Unit 6.3 Interference of sound
Slide 1 - Diapositive
Content objectives
describe
how sound waves reinforce
state
what happens to a sound when sound waves reinforce
explain
how sound waves cancel
describe
what happens to the loudness of a sound when sound waves cancel
Slide 2 - Diapositive
Slide 3 - Vidéo
shape of the graph of a sound
From memory:
timer
1:00
peak
trough
Slide 4 - Diapositive
Answer the given questions related to interference.
Discuss by comparing with the person next to you your answers.
Prior Knowledge Check
timer
1:00
Slide 5 - Diapositive
Which is the synonym for the word "interfere"?
prevent
allow
decrease
increase
Slide 6 - Sondage
Sound waves produce interference when they meet each other.
A
True
B
False
Slide 7 - Quiz
Interference can happen if the waves are of the same type.
I agree.
I disagree.
Slide 8 - Sondage
Sound waves CAN interfere with water waves.
I agree.
I disagree.
Slide 9 - Sondage
What happens when two sound waves of the
same
frequency and amplitude
interfere
with each other?
Key Question 1
timer
1:00
Slide 10 - Diapositive
www.physicsclassroom.com
Slide 11 - Lien
Interference can produce TWO effects: the waves can reinforce or the waves can cancel each other.
I agree.
I disagree.
Slide 12 - Sondage
When two sound waves, the
amplitude
of the sound waves increases.
Does the sound become
louder
?
A
Yes
B
No
C
Maybe
Slide 13 - Quiz
When two sound waves, the
amplitude
of the sound waves increases.
Does the
pitch
become higher?
A
Yes
B
No
C
Maybe
Slide 14 - Quiz
When two sound waves, the
amplitude
of the sound waves increases.
Does the
frequency
become increase?
A
Yes
B
No
C
Maybe
Slide 15 - Quiz
Application
Slide 16 - Diapositive
Application
Slide 17 - Diapositive
27 March 2023
Unit 6.3 Interference of sound
Slide 18 - Diapositive
Would you hear a sound when the peaks and troughs of two similar sound waves meet together?
Key Question 2
timer
1:00
Slide 19 - Diapositive
www.physicsclassroom.com
Slide 20 - Lien
Slide 21 - Diapositive
What two conditions must two waves have to interfere effectively with each other?
Slide 22 - Question ouverte
Application
Slide 23 - Diapositive
Plenary (Sharing)
Slide 24 - Diapositive
Answer questions found on page 221 of your learner's book.
Use your science notebook for your answers.
Turn your work in by the end of the period.
Activity
timer
1:00
Slide 25 - Diapositive
What's next?
Check the weekly reminders
Slide 26 - Diapositive
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