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Lesson 7— Loudness, amplitude and oscilloscopes — Online
The properties
of
a wave
1 / 27
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Slide 1:
Tekstslide
Natuurkunde / Scheikunde
Middelbare school
havo, vwo
Leerjaar 2
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The properties
of
a wave
Slide 1 - Tekstslide
Learning goals
Name and describe the three properties of a wave
Name what affects the loudness of a sound
Be able to read waves from an oscilloscope
Slide 2 - Tekstslide
The properties of a wave
Slide 3 - Tekstslide
A wave
A repeating pattern
Slide 4 - Tekstslide
How many waves are there in the image below?
Slide 5 - Tekstslide
How many waves are there in the image below?
2 Waves
Slide 6 - Tekstslide
A wave has three properties
Slide 7 - Tekstslide
Wavelength
Amplitude
Frequency
Slide 8 - Tekstslide
Slide 9 - Video
Exercise
Explain the three properties of a wave in your own words. Also name their unit.
Wavelength
Amplitude
Frequency
Slide 10 - Tekstslide
Wavelength
The length of a wave (in cm, m, km)
Amplitude
The distance from the center of the wave to top or bottom (in cm, m, km)
Frequency
The amount of waves per second (in hertz, Hz)
Slide 11 - Tekstslide
One block is 2 cm long
wavelength
8 cm
Amplitude
2 cm
Frequency
2 Hz
This snapshots has a duration of 1 second
Slide 12 - Tekstslide
One block is 2 cm long
wavelength
8 cm
Amplitude
2 cm
Frequency
2 Hz
This snapshots a duration of 1 second
This snapshots has a duration of 1 second
Slide 13 - Tekstslide
(in cm, m, km)
One block is 2 cm long
wavelength
8 cm
Amplitude
2 cm
Frequency
2 Hz
This snapshots a duration of 1 second
This snapshots has a duration of 1 second
Slide 14 - Tekstslide
One block is 2 cm long
wavelength
8 cm
Amplitude
2 cm
Frequency
2 Hz
This snapshots a duration of 1 second
2 Waves per second
This snapshots has a duration of 1 second
Slide 15 - Tekstslide
Question 1 — How many waves are there in the image below?
Slide 16 - Tekstslide
Question 2 — How many waves are there in the image below?
4 Waves
Slide 17 - Tekstslide
Question 2
a)
What is the wavelength the waves in this image?
b)
What is the amplitude of these waves?
c)
What is the frequency of this signal?
One block is 2 cm long
This snapshots has a duration of 1 second
Slide 18 - Tekstslide
Question 3
a) Wave length:
3.2 Cm
b) Amplitude
1 cm
c) Frequency
5 Hz
One block is 2 cm long
This snapshots has a duration of 1 second
Slide 19 - Tekstslide
Question 3
Which of the three properties of a wave affects the loudness of the sound it produces?
A) The frequency
B) The wavelength
C) The Amplitude
Slide 20 - Tekstslide
Question 4)
Which of the three properties of a wave affects the loudness of the sound it produces?
A) The frequency
B) The wavelength
C) The Amplitude
Slide 21 - Tekstslide
Question 4 — Which wave create a louder sound?
Wave 1
Wave 2
Slide 22 - Tekstslide
Question 5 — Which wave create a louder sound?
Wave 1
Wave 2
Slide 23 - Tekstslide
An oscilloscope
Link
Slide 24 - Tekstslide
Amplification
The Amplitude of a wave...
...Determines the loudness of a sound
Slide 25 - Tekstslide
Working independently
Homework
Read: 5.5
Do: 5.4 The workbook exercises
Slide 26 - Tekstslide
Learning goals
Name and describe the three properties of a wave
Name what affects the loudness of a sound
Be able to read waves from an oscilloscope
Slide 27 - Tekstslide
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