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Refraction and Diffraction

mr.mada315 Core Physics GCSE Inglés 7 fichas

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1What does it mean when a wave is refracted?They go through a new material but change direction
2What does it mean when a wave is diffracted?The wave bends round obstacles, causing the wave to spread out
3What does the amount of diffraction depend on?The size of the gap, the wave is passing through, relative to the wavelength
4In diffraction, the narrower the gap or longer the wavelength...... the more the wave spreads out
5What happens when a wave crosses a boundary between two substances?It changes direction
6When are waves only refracted?If they meet a new medium at an angle
7When will waves never be refracted, even though they change speed?If they are moving along a normal