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waves - Coggle Diagram
waves
solar system
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the collection of eight planets and their moons in orbit round the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets
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light and filter
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White light is made up of the following colours: red, orange, yellow, green, blue, indigo, and violet.
if there is a filter, e.g blue window, when you look through it it will look blue
sound waves
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Hard surfaces reflect sound well, making echoes.
Soft surfaces, like curtains and carpets, reflect very little sound. They absorb the sound instead, so there are no echoes.
pinhole camera- A pinhole camera consists of a box or tube with a translucent screen at one end and a tiny hole (the pinhole) made in the other end. Light enters the box through the pinhole and is focused by the pinhole onto the translucent screen. The image is upside down and smaller than the object.