Lesson 7— Loudness, amplitude and oscilloscopes — Original

The properties

of a wave

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Natuurkunde / ScheikundeMiddelbare schoolhavo, vwoLeerjaar 2

This lesson contains 38 slides, with text slides and 1 video.

Items in this lesson

The properties

of a wave

Slide 1 - Slide

This lesson

The properties of a wave
An oscilloscope
Amplification

Slide 2 - Slide

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

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The properties of a wave

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A wave

A repeating pattern

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How many waves are there in the image below?

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How many waves are there in the image below?

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A wave has three properties

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Wavelength
Amplitude
Frequency

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Slide 10 - Video

What is meant by...

Wavelength
Amplitude
Frequency

Slide 11 - Slide

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 - Slide

What is the wavelength of this wave?

One block is 2 cm long

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What is the wavelength of this wave?

One block is 2 cm long

8 cm

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What is the amplitude of this wave?

One block is 2 cm long

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What is the amplitude of this wave?

One block is 2 cm long

4,5 cm

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What is the frequency of this wave?

1 second

Slide 17 - Slide

What is the frequency of this wave?

1 second

5 Hz

5 waves/ second

Slide 18 - Slide

An oscilloscope

Link

Slide 19 - Slide

Amplification

The Amplitude of a wave...

...Determines the loudness of a sound

Slide 20 - Slide

Which wave create a louder sound?

Wave 1

Wave 2

Slide 21 - Slide

Which wave create a louder sound?

Wave 1

Wave 2

Slide 22 - Slide

Working independently

Do: workbook exercises 5.4

Do: yellow block exercises 5.4

Slide 23 - Slide

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 - Slide

Slide 25 - Slide

How many waves are there in the image below?

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How many waves are there in the image below?

One wave

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How many waves are there in the image below?

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

Image 2

Two waves

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

Image 3

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

Image 3

Image 2:

Four waves

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

Image 1

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

Image 1

Image 2:

16 cm

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

Image 2

Slide 34 - Slide

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

Image 2

Image 2:

8 cm

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

Image 3

Image 2:

4 cm

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

Image 1

Image 2

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

Image 1

Image 2

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Lesson 7— Loudness, amplitude and oscilloscopes — Original

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