CAIE IGCSE Physics 3.4.7 Changes in amplitude & frequency
Practise linking wave features to what is heard, deciding how amplitude changes loudness and frequency changes pitch.
- Syllabus
- 2026–2028
- Course
- Physics 0625
Exam points
- state that increasing amplitude makes a sound louder, and decreasing amplitude makes it quieter
- link higher frequency to higher pitch and lower frequency to lower pitch in sound descriptions
3.4.7—Changes in amplitude and frequency question 1
Fig. 6.1 represents wavefronts of a sound wave travelling in air from left to right.
Fig. 6.1
The loudness of the sound increases at the same pitch.
State and explain any change there would be in the pattern of wavefronts shown in Fig. 6.1.
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