Year 9 Science · Unit 4

Waves and Motion

Investigate wave properties, sound, light and motion. Explore how waves transfer energy, how forces affect movement, and how scientists model and measure motion using graphs and calculations.

Stage 5 20 Lessons 4 Checkpoints Unit Quiz

Lessons

Block A — Wave Basics (L01–L05)

01What Are Waves? 02Transverse and Longitudinal Waves 03Amplitude, Wavelength and Frequency 04Wave Speed Calculations 05Checkpoint 1 — Wave Basics Review

Block B — Sound and Light (L06–L10)

06Sound Waves and Vibrations 07Hearing, Pitch and Loudness 08Light Waves and the Electromagnetic Spectrum 09Reflection, Refraction and Absorption 10Checkpoint 2 — Sound and Light Review

Block C — Describing Motion (L11–L15)

11Distance, Displacement, Speed and Velocity 12Speed Calculations and Units 13Distance-Time Graphs 14Speed-Time Graphs and Acceleration 15Checkpoint 3 — Motion Graphs Review

Block D — Forces and Synthesis (L16–L20)

16Forces and Changes in Motion 17Balanced and Unbalanced Forces 18Practical Investigation: Waves or Motion Data 19Using Evidence to Explain Motion and Waves 20Unit Synthesis and Depth Study Preparation

Checkpoints & Assessment

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Checkpoint 1
Lessons 1–5
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Checkpoint 2
Lessons 6–10
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Checkpoint 3
Lessons 11–15
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Checkpoint 4
Lessons 16–20
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Unit Quiz
Full unit cumulative assessment