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Lesson 7— Loudness, amplitude and oscilloscopes — Original
The properties
of
a wave
1 / 38
next
Slide 1:
Slide
Natuurkunde / Scheikunde
Middelbare school
havo, vwo
Leerjaar 2
This lesson contains
38 slides
, with
text slides
and
1 video
.
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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
Slide 3 - Slide
The properties of a wave
Slide 4 - Slide
A wave
A repeating pattern
Slide 5 - Slide
How many waves are there in the image below?
Slide 6 - Slide
How many waves are there in the image below?
Slide 7 - Slide
A wave has three properties
Slide 8 - Slide
Wavelength
Amplitude
Frequency
Slide 9 - Slide
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
Slide 13 - Slide
What is the wavelength of this wave?
One block is 2 cm long
8 cm
Slide 14 - Slide
What is the amplitude of this wave?
One block is 2 cm long
Slide 15 - Slide
What is the amplitude of this wave?
One block is 2 cm long
4,5 cm
Slide 16 - Slide
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?
Slide 26 - Slide
How many waves are there in the image below?
One wave
Slide 27 - Slide
How many waves are there in the image below?
Slide 28 - Slide
1b.) How many waves do you count in each of the following three pictures?
Image 2
Two waves
Slide 29 - Slide
1c.) How many waves do you count in each of the following three pictures?
Image 3
Slide 30 - Slide
1c.) How many waves do you count in each of the following three pictures?
Image 3
Image 2:
Four waves
Slide 31 - Slide
2a.)
If one block is 2cm wide, what is the wave length of this wave?
Image 1
Slide 32 - Slide
2a.)
If one block is 2cm wide, what is the wave length of this wave?
Image 1
Image 2:
16 cm
Slide 33 - Slide
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
Slide 35 - Slide
2c.)
If one block is 2cm wide, what is the wave length of this wave?
Image 3
Image 2:
4 cm
Slide 36 - Slide
3) Which of these two waves has a higher amplitude? Explain.
Image 1
Image 2
Slide 37 - Slide
3) Which of these two waves has a higher amplitude? Explain.
Image 1
Image 2
Slide 38 - Slide
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