Physics P1 4.5 / 5 based on 2 ratings ? PhysicsALL OF PHYSICS TOPIC 1GCSEEdexcel Created by: rayhanb1Created on: 18-05-14 17:05 model that states earth is in the centre of the universe geocentric 1 of 21 model that states sun is in the centre of the universe heliocentric 2 of 21 when a wave hits a boundary between one medium and another, some energy is... reflected 3 of 21 another way of saying 'change direction' but with waves refraction 4 of 21 distance from one peak to the next wavelength 5 of 21 how many complete waves pass a certain point per second frequency 6 of 21 the height of the wave from the midline to the peak amplitude 7 of 21 vibrations of this wave travel 90 degrees to the direction of travel of the wave transverse 8 of 21 vibrations of this wave are along the same direction as the wave is travelling longitudinal 9 of 21 these type of lenses are used to focus light converging 10 of 21 the point where rays hitting the lens parallel to the axis all meet focalpoint 11 of 21 who discovered infrared radiation herschel 12 of 21 who discovered ultraviolet radiation ritter 13 of 21 radiowaves and microwaves are used for.... communications 14 of 21 what substance absorbs UV radiation and emits visible light? fluorescence 15 of 21 gamma rays sterilize surgical instruments and... food 16 of 21 gamma radiation is one of three types of what radiation? ionising 17 of 21 a big star explode and becomes a... supernova 18 of 21 stars intially form from clouds of dust and gas called... nebulas 19 of 21 sound with frequencies less than 20Hz is... infrasound 20 of 21 what do boats and submarines use to detect stuff in the water around them sonar 21 of 21
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