2. (a) Light travels through space as a wave - Edexcel - GCSE Physics - Question 2 - 2018 - Paper 1
Question 2
2. (a) Light travels through space as a wave.
A model of this type of wave can be made using a Slinky spring.
A Slinky spring is a long coil of wire like the one s... show full transcript
Worked Solution & Example Answer:2. (a) Light travels through space as a wave - Edexcel - GCSE Physics - Question 2 - 2018 - Paper 1
Step 1
State the name of this type of wave.
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Answer
The type of wave represented by the Slinky spring is a transverse wave.
Step 2
Complete the following sentence by putting a cross (✗) in the box next to your answer.
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Answer
The amplitude of this wave can be made bigger by moving the hand up and down.
✔ A by a bigger distance.
Step 3
Calculate the speed of the wave.
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Answer
To calculate the speed of the wave, we can use the formula:
speed=frequency×wavelength
Substituting the values:
speed=3.2 Hz×0.71 m
This gives:
speed=2.272 m/s
Therefore, the speed of the wave is approximately 2.3 m/s.
