General properties of waves and sound
General wave mechanics plus sound production, compressions, rarefactions, loudness, pitch and echo ranging.
Learning goals
- Describe wave generation by vibrating sources, ropes and springs
- Describe ripple-tank waves using wavefronts
- Explain that waves transfer energy
- Explain that wave energy transfer does not transfer matter
- Use amplitude, frequency and wavelength to describe wave motion
- Define and use wave speed and period and interpret wave graphs
- Recall and apply wave speed = frequency × wavelength
- Compare transverse and longitudinal waves and give examples
- Explain sound production by vibration and the need for a medium
- Describe sound using compressions and rarefactions
- Relate sound loudness to amplitude and pitch to frequency
- Explain reflected-sound echoes and use them to measure distance
G3 Science (Physics) · Topic 9
Begin with the complete topic lesson. Then try a short check, use the feedback to review one idea and come back later for another attempt.
Before you begin
Build the idea in order
- Wave motion
- Wave quantities
- Wave speed and wave type
- Sound and echoes
Lessons
General properties of waves
Connect wave motion and quantities to sound production, pitch, loudness and echo ranging.
Check your understanding
General properties of waves and sound topic check
Check the required topic capabilities and get focused practice for ideas that need another look.
What to remember
- A travelling disturbance transfers energy without an overall transfer of matter.
- Amplitude is maximum displacement; wavelength is the distance between consecutive points in the same phase.
- Use T = 1/f and v = fλ with consistent SI units.
- Transverse vibrations are perpendicular to travel; sound is longitudinal and travels through compressions and rarefactions.
- Amplitude affects loudness, frequency affects pitch, and an echo time measures the out-and-back journey.
Topic and syllabus information
General properties of waves and sound is Topic 9 in K326 / K327 Physics component · 2027.
The lesson and questions stay at the depth required for this course.
Reviewed 9 Aug 2026
Continue with the next resource in this course.
Course and syllabus information
- Course
- SEC G3 Combined Science Physics component
- Edition
- SEC G3 Combined Science Physics component 2027