6.2 Interference of sound

27 March 2023
Unit 6.3 Interference of sound
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PhysicsSecondary EducationAge 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:
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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
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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
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Slide 10 - Diapositive

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
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1:00

Slide 19 - Diapositive

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
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Slide 25 - Diapositive

What's next?
Check the weekly reminders

Slide 26 - Diapositive