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Chapter Six Waves Revision

LOGOS Alexey

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Across
5.Waves that move side-to-side/up-and-down
6.When waves bend round obstacles, or spread out as they pass through a gap
8.The material a sound wave has to pass through
10.Waves that move forwards-and-backwards
12.A graph that shows how air pressure
13.The waves are reflected form a surface at the same angle as they strike at
14.The acronym of radio detection and ranging
15.What is heard when sound reflects off a hard surface
17.The time it takes for sound to travel to a hard surface and back to the source (2 Words)
18.What echo-sounders do to the area beneath them
19.The maximum difference a point moves from its rest position when a wave passes
20.Weaker sounds mixed in with the 'fundamental' frequency
Down
1.Musical scales are based on these
2.The 'quality' of the sound
3.An instrument that can display waveforms on a screen
4.The musical term for frequency
7.An object that shows waves in water (2 Words)
9.Sound that is above the range of human hearing
11.Waves slow and change direction
16.The SI unit of frequency

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