Figure 2 shows some waves - AQA - GCSE Physics - Question 3 - 2020 - Paper 1
Question 3
Figure 2 shows some waves.
Which arrow represents the wavelength of the waves?
Tick (✓) one box.
P
Q
R
S
Which arrow represents the amplitude of the waves?
Tick (... show full transcript
Worked Solution & Example Answer:Figure 2 shows some waves - AQA - GCSE Physics - Question 3 - 2020 - Paper 1
Step 1
Which arrow represents the wavelength of the waves?
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Answer
The wavelength of the waves is represented by arrow R.
Step 2
Which arrow represents the amplitude of the waves?
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Answer
The amplitude of the waves is represented by arrow S.
Step 3
Calculate the period of the waves.
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Answer
Using the equation:
T=f1
where the frequency (f) is 0.20 Hz:
T=0.201=5.0 seconds
Step 4
What happens to the wavelength of the waves?
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Answer
The wavelength decreases.
Step 5
What else should the student measure in order to calculate the speed of the wave?
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Answer
The student should measure the time taken by the wave to travel the length of the tray.
Step 6
What was the independent variable in this investigation?
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Answer
The independent variable is the depth of water.
Step 7
Give one conclusion that can be made from Figure 4.
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Answer
As the depth of water increases, the speed of the waves also increases.
Step 8
What was the speed of a wave when the depth of water was 2.5 cm?
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Answer
The speed of the wave at a depth of 2.5 cm was 0.49 m/s.
