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P4 General Studies: Sound, Vibration and Hearing (Paper 2 (intermediate))
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P4 General Studies: Sound, Vibration and Hearing (Paper 2 (intermediate))
Paper two adds the structure of hearing, speed-of-sound sums and ways to cut noise.
Direct answers Write speed times time first, then ask how many trips the sound makes.
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)
- FoundationWhy do astronauts use radio to talk in space?
- FoundationWhich part of the ear collects sound first?
- FoundationWhat happens to the eardrum when sound waves reach it?
- IntermediateOne fork vibrates 440 times per second and another 880 times. How many times the frequency is the second?
- IntermediateThunder is heard 3 seconds after the lightning. With sound at 340 m/s, how far away is the strike?
- IntermediateEighteen of 24 pupils hear the school bell. What proportion is that, in percentage points?
- ChallengeThe television is still heard through a closed door. Why?
- ChallengeWhy does a ringing clock sound softer when wrapped in a quilt?
- ChallengeThe frequency rises from 200 Hz to 600 Hz. What is the increase in percentage points?
- Error redoError clinic: sound travels fastest in a vacuum. Right?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | Because space is close to a vacuum, where sound cannot travel. | Radio waves need no medium, so they still carry messages through space. |
| 2 | The outer ear, or pinna. | The pinna guides sound waves into the ear canal and on to the eardrum. |
| 3 | It vibrates with the sound waves. | The vibration passes through the middle ear to the inner ear and then the hearing nerve. |
| 4 | 2.0 times. | 880 divided by 440 gives 2.0, and doubling the frequency raises the pitch an octave. |
| 5 | 1020 m. | 340 multiplied by 3 gives 1020 metres. |
| 6 | 75.0 percentage points. | Eighteen divided by 24 then multiplied by 100 gives 75.0 percentage points. |
| 7 | Sound travels on through the solid door. | Solids carry sound faster than air, so heavy or absorbent materials are used to block it. |
| 8 | The quilt absorbs part of the sound energy, so less escapes. | Loose porous materials absorb sound and are a common way to cut noise. |
| 9 | 200.0 percentage points. | The rise is 400 Hz, which is 200.0 percentage points of the original 200 Hz. |
| 10 | No. | A vacuum has no medium at all, so sound cannot travel through it. |
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.
Then try paper three, using voltage and current to work out power and resistance.Tutor Registration →
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