Science Waves, Light & Soundusually ages 11–12

How Sound Waves Travel

Explain that sound is produced by vibrating objects and travels as a longitudinal pressure wave through solids, liquids, and gases; describe reflection of sound (echoes) and absorption; explain why sound cannot travel through a vacuum

How to tell they’ve got it

Tick these off as you see them — no test required.

Explains how a vibrating object creates regions of compression and rarefaction in air
Explains why sound travels fastest in solids and cannot travel in a vacuum
Describes how an echo is produced and gives a practical application (sonar, ultrasound)
Explains what sound absorption means and why soft furnishings reduce echoes

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Try this together

If your child heard an echo in a large empty hall, could they explain what causes the echo, why the same sound in a carpeted living room doesn’t echo, and what would happen to sound in outer space?

Where this sits on the map

Stuck here? Check the skills it builds on first. Confident? Here’s what it unlocks.

Builds on

Sound Travels Through Materialsages 8–9Sound as a pressure wave extends the understanding that vibrations travel through media

Wave Properties & Typesages 11–12Describing sound as a longitudinal pressure wave requires the general wave properties framework

How Sound Waves Travelthis skill · ages 11–12

Unlocks

Nothing on the map depends on this yet.

solid = must come firstdashed = helps

Curriculum alignment

Candidate matches to official curriculum codes — machine-suggested, unreviewed (v0.1).

Show candidate curriculum codes · 1 VIC

Australian Curriculum v9 candidate

This skill sits outside the F–6 Australian Curriculum — no candidate code matched (v0.1).

Victorian Curriculum 2.0 codes & levels only

VC2TDE6C01low confidenceDesign and Technologies · Levels 5 and 6 · Technologies Contexts strand

These are candidate alignments generated by semantic matching — machine-suggested and unreviewed (v0.1), not official or verified mappings. For official curriculum content see australiancurriculum.edu.au, curriculum.nsw.edu.au and f10.vcaa.vic.edu.au. Don’t rely on them for registration or compliance purposes.

Nearby on the map

Reflection & Refractionages 11–12 Wave Properties & Typesages 11–12 White Light & Colourages 11–12 Drawing Ray Diagramsages 12–13

All Waves, Light & Sound skills →