Year 9 · Science

Observed Waves

Year 9 learners practise wave properties amplitude frequency and wavelength.

The activities include Define and Calculate Amplitude, Frequency, Wavelength and Time Period, Define and Calculate Amplitude, Frequency, Wavelength and Time Period, Describe Ripple Tank Experiments, and related practice. The checked support below includes video, worksheet, teaching, lesson. Open a resource in its provider's website and choose the format that best helps the learner explain the idea independently.

Activities covered

Define and Calculate Amplitude, Frequency, Wavelength and Time Period
Define and Calculate Amplitude, Frequency, Wavelength and Time Period
Describe Ripple Tank Experiments
Explain and Apply the Principle of Superposition of Waves
Explain the Differences Between Longitudinal and Transverse Waves
Use the Wave Equation

Checked learning resources

Sound properties: amplitude, period, frequency and wavelength

Khan Academy · Video · Opens on the provider website

The video defines amplitude, wavelength, frequency and time period, then shows how to measure them from wave diagrams using the equilibrium line, peaks and troughs; frequency is the inverse of period.
Water waves

Oak National Academy · Video · Opens on the provider website

This KS3 Oak video explains water waves in a ripple tank and wave superposition, including how overlapping waves add or cancel while transferring energy.
Introduction to waves: transverse and longitudinal waves

Khan Academy · Video · Opens on the provider website

The video directly compares transverse rope waves with longitudinal sound waves, showing the direction of oscillation relative to energy transfer and examples of each type.
Waves - KS3 Physics

BBC Bitesize · Worksheet · Opens on the provider website

BBC KS3 science teaching, examples and practice checks for Observed Waves; selected for the concepts in "Define and Calculate Amplitude, Frequency, Wavelength and Time Period" after reviewing the full worksheet context.
Wave properties lesson and practice

Khan Academy · Worksheet · Opens on the provider website

The browser lesson combines a wave-properties video with checks on amplitude, wavelength, frequency, equilibrium and periodic waves.
Waves: lesson sequence

Oak National Academy · Teaching · Opens on the provider website

This KS3 Oak unit provides sequenced teaching on Waves. It includes the lesson objective closest to the full worksheet context.
Waves

Oak National Academy · Lesson · Opens on the provider website

Year 9 Science resource matched to wave properties amplitude frequency and wavelength.
Wave Equation | Waves | Physics | FuseSchool

YouTube — FuseSchool - Global Education · Video · Opens on the provider website

Wave Equation | Waves | Physics | FuseSchool Waves have a frequency (the number of complete waves passing a point every ... · FuseSchool - Global Education · 3 minute video