sound wave, Any object can make a, vibration, A movement about a fixed point, particles, Sound waves can travel in a gas, liquid or solid because they all contain, vibrate, When an object vibrates it makes the particles next to it -------- too, squashes, As the vibrating object moves toward the air particles, it -------- them together, spread, As the object moves away from the air particles next to it, it gives them more space so they ------ out, matter, The movement of sound through air can be explained by using the particle model of, forces of attraction, The particles in liquids and solids are held together by, liquid, Sound travels very well through a, solid, When sounds travels through a ------- it moves even faster, vacuum, Sound waves cannot travel through a -------- because it doesn't contain any particles, echoes, --------- occur when here is a time interval between the transmitted and received sounds of over one tenth of a second
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Sound
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Ronelleapollis
Yr 7
Science
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