A sound wave travels in air and enters water. What happens to the sound wave as it enters the water? | Speed | Frequency | Wavelength | |------------|------------|-------------| | A | decreases | decreases | decreases | | B | decreases | stays the same | decreases | | C | increases | increases | increases | | D | increases | stays the same | increases |

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A sound wave travels in air and enters water - OCR Gateway - GCSE Physics - Question 1 - 2019 - Paper 1

Question 1

A sound wave travels in air and enters water. What happens to the sound wave as it enters the water? | Speed | Frequency | Wavelength | |------------|------... show full transcript

Worked Solution & Example Answer:A sound wave travels in air and enters water - OCR Gateway - GCSE Physics - Question 1 - 2019 - Paper 1

Step 1

What happens to the Speed?

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Answer

As a sound wave enters water from air, its speed generally increases due to the denser medium of water compared to air.

Step 2

What happens to the Frequency?

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Answer

The frequency of the sound wave remains the same as it transitions from air to water, since frequency is determined by the source of the sound and is not affected by the medium.

Step 3

What happens to the Wavelength?

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Answer

As a result of the increase in speed while the frequency remains constant, the wavelength increases when the sound wave enters water.

Step 4

Final Answer

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Answer

Based on the analysis above, the correct option is D: Speed increases, Frequency stays the same, Wavelength increases.

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A sound wave travels in air and enters water - OCR Gateway - GCSE Physics - Question 1 - 2019 - Paper 1

Worked Solution & Example Answer:A sound wave travels in air and enters water - OCR Gateway - GCSE Physics - Question 1 - 2019 - Paper 1

What happens to the Speed?

What happens to the Frequency?

What happens to the Wavelength?

Final Answer

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