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Waves (Waves (Wavelength is the length of a full cycle of the wave,…
Waves
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Refraction
Greater change in speed, makes a wave bend
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If it hits boundary at an angle, change of speed causes change in direction
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When a wave crosses a boundary between materials, it changes speed
Difference in distance travelled, by wavefront causes wave to bend
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Longitudinal waves
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Creates compressions (high pressure, lots of particles) and rarefactions (low pressure, fewer particles)
Waves at boundaries
Waves is ABSORBED by the second material, the wave transfers energy to materials energy stores. Energy is transferred to a thermal energy store
Waves is TRANSMITTED through the second material, wave carries on travelling through new material. Often leads to refraction. Used in communications
Waves are either ABSORBED, TRANSMITTED & REFLECTED at boundaries
Wave is REFLECTED, this is where the ray is neither absorbed or transmitted, it is sent back. away from second material
Transverse waves
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EM waves, S-Waves and ripples are all transverse waves
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