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P4 General Studies: Sound, Vibration and Hearing (Paper 1 (basics))
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P4 General Studies: Sound, Vibration and Hearing (Paper 1 (basics))
Paper one starts with vibration and the medium sound needs, then works on frequency and percentages.
Direct answers Ask first whether something is vibrating and whether there is a medium; the answer follows.
01 Paper details (check answers afterwards)
| Item | Detail |
|---|---|
| Questions | 10 |
| Suggested time | 20 |
| Difficulty mix | Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1 |
| Chapter | Chapter: P4 General Studies: Sound, Vibration and Hearing |
| Level | parts of a closed circuit, conductors against insulators, series against parallel, adding up battery voltage, and electrical safety |
02 Questions (10 items)
- FoundationWhat produces sound?
- FoundationA ringing alarm is sealed in a jar and the air is pumped out. Is the ringing still heard?
- FoundationHow does a drum sound differ when hit hard and hit gently?
- IntermediateA tuning fork vibrates 200 times each second. What is its frequency?
- IntermediateAnother fork vibrates 400 times per second. Compared with 200, how is its pitch?
- IntermediateSix materials are tested and 4 of them carry sound. What proportion is that, in percentage points?
- ChallengeIn which does sound travel fastest: air, water or steel?
- ChallengeWhat decides how high or low a sound is?
- ChallengeNine of 12 instruments make sound with vibrating strings. What proportion is that, in percentage points?
- Error redoError clinic: the louder the sound, the higher the pitch. Right?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | A vibrating object produces sound. | Once the vibration stops, the sound stops too. |
| 2 | No. | Sound needs a medium; a vacuum has none, so nothing carries the sound. |
| 3 | It is louder when hit hard. | A harder hit makes a bigger amplitude, so the sound is louder. |
| 4 | 200 Hz. | The number of vibrations per second is the frequency, measured in hertz. |
| 5 | It is higher. | 400 is twice 200, and a higher frequency gives a higher pitch. |
| 6 | 66.7 percentage points. | Four divided by 6 then multiplied by 100 gives 66.7 percentage points. |
| 7 | Steel. | Solids usually carry sound fastest, liquids next and gases slowest. |
| 8 | The frequency of the vibration. | Frequency sets the pitch while amplitude sets the loudness; they are separate. |
| 9 | 75.0 percentage points. | Nine divided by 12 then multiplied by 100 gives 75.0 percentage points. |
| 10 | No. | Loudness follows amplitude and pitch follows frequency; they are independent. |
04 What to do after marking
- After marking, redo only the wrong items and write down which step went wrong (formula, unit, or misread number).
- Repeat the same item two days later; move to the next paper only when both attempts are correct.
- Parents only need the answer and note columns; there is no need to explain every item.
After paper one, take paper two and sort out series against parallel in one pass.Tutor Registration →
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