Science Waves, Light & Sound Conceptual 12–13 yrs

Waves & Different Materials

波与不同材料

Description

Explain how waves can be absorbed, transmitted, or reflected by different materials, and apply these interactions to explain colour perception, sight, communication technologies, and the effects of different surfaces on wave behaviour

Mastery Evidence

✓ Explains the difference between absorption, transmission, and reflection of waves
✓ Uses the three interactions to explain how we see coloured objects
✓ Explains how radio waves, visible light, and infrared are used in different communication technologies
✓ Describes how the properties of a surface (colour, texture, material) determine how it interacts with radiation

Assessment Prompt

If your child was wearing a black t-shirt on a sunny day and a friend was wearing white, could they explain using wave interactions why the black shirt gets hotter — and which properties of materials determine how they absorb or reflect radiation?