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Lesson 7— Loudness, amplitude and oscilloscopes — Original

The properties 
of a wave
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Slide 1: Diapositive
Natuurkunde / ScheikundeMiddelbare schoolhavo, vwoLeerjaar 2

Cette leçon contient 38 diapositives, avec diapositives de texte et 1 vidéo.

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The properties 
of a wave

Slide 1 - Diapositive

This lesson

  • The properties of a wave
  • An oscilloscope
  • Amplification

Slide 2 - Diapositive

Learning goals
  • Describe the three properties of wave
  • Know what determines the loudness of a sound
  • Explain what an oscilloscope does
  • Explain how amplification works

Slide 3 - Diapositive

The properties of a wave

Slide 4 - Diapositive

A wave
A repeating pattern

Slide 5 - Diapositive

How many waves are there in the image below?

Slide 6 - Diapositive

How many waves are there in the image below?

Slide 7 - Diapositive

A wave has three properties

Slide 8 - Diapositive



  • Wavelength
  • Amplitude
  • Frequency

Slide 9 - Diapositive

Slide 10 - Vidéo

What is meant by...
  •  Wavelength
  • Amplitude
  • Frequency

Slide 11 - Diapositive

Wavelength
The length of a wave (in cm, m, km)

Amplitude
The distance from the center of the wave to the highest or lowest point (in cm, m, km)

Frequency
The amount of waves per second (in hertz, Hz)

Slide 12 - Diapositive

What is the wavelength of this wave?
One block is 2 cm long

Slide 13 - Diapositive

What is the wavelength of this wave?
One block is 2 cm long
8 cm

Slide 14 - Diapositive

What is the amplitude of this wave?
One block is 2 cm long

Slide 15 - Diapositive

What is the amplitude of this wave?
One block is 2 cm long
4,5 cm

Slide 16 - Diapositive

What is the frequency of this wave?
1 second

Slide 17 - Diapositive

What is the frequency of this wave?
1 second
5 Hz
5 waves/ second

Slide 18 - Diapositive

An oscilloscope
Link

Slide 19 - Diapositive

Amplification
The Amplitude of a wave...
...Determines the loudness of a sound

Slide 20 - Diapositive


Which wave create a louder sound?
Wave 1
Wave 2

Slide 21 - Diapositive


Which wave create a louder sound?
Wave 1
Wave 2

Slide 22 - Diapositive

Working independently
Do: workbook exercises 5.4
Do: yellow block exercises 5.4

Slide 23 - Diapositive

Learning goals
  • Describe the three properties of wave
  • Know what determines the loudness of a sound
  • Explain what an oscilloscope does
  • Explain how amplification works

Slide 24 - Diapositive

Slide 25 - Diapositive

How many waves are there in the image below?

Slide 26 - Diapositive

How many waves are there in the image below?
One wave

Slide 27 - Diapositive

How many waves are there in the image below?

Slide 28 - Diapositive

1b.) How many waves do you count in each of the following three pictures? 
Image 2
Two waves

Slide 29 - Diapositive

1c.) How many waves do you count in each of the following three pictures? 
Image 3

Slide 30 - Diapositive

1c.) How many waves do you count in each of the following three pictures? 
Image 3
Image 2:
Four waves

Slide 31 - Diapositive

2a.)  If one block is 2cm wide, what is the wave length of this wave?
Image 1

Slide 32 - Diapositive

2a.)  If one block is 2cm wide, what is the wave length of this wave?
Image 1
Image 2:
16 cm

Slide 33 - Diapositive

2b.)  If one block is 2cm wide, what is the wave length of this wave?
Image 2

Slide 34 - Diapositive

2b.)  If one block is 2cm wide, what is the wave length of this wave?
Image 2
Image 2:
8 cm

Slide 35 - Diapositive

2c.)  If one block is 2cm wide, what is the wave length of this wave?
Image 3
Image 2:
4 cm

Slide 36 - Diapositive

3) Which of these two waves has a higher amplitude? Explain.
Image 1
Image 2

Slide 37 - Diapositive

3) Which of these two waves has a higher amplitude? Explain.
Image 1
Image 2

Slide 38 - Diapositive

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