Refraction - When light bends as it changes medium, Critical Angle - An angle of Incidence, Which given an angle of refraction of 90⁰, Mirage - Caused by T.I.R, Reflection - When light bounces off a surface, Dispersion - Breaking up of white light into it's seven colours , Velocity - Speed in a given direction , Constant Velocity - If an object moves in straight line and does not speed up or slow down, Newton's second law - The rate of change of momentum is proportional to the applied force and in the same direction , Centre of gravity - Point at which all the weight acts, 9.81 m/s² - Value of G (give units), Heat - Amount of internal energy an object has, Temperature - Measure of level of heat , Convection - How heat moves through liquid , SHC - Amount of energy needed to raise 1kg of a material, Latent Heat - The energy needed to change the state of a substance, Sound - Made by the vibrations of a medium, Resonance - Vibrating object causes a near object to vibrate at the same frequency, Harmonics - Determines the quality of a music note, Frequency - The number of waves passing a point per second, Barton's Pendulum - Example of Resonance, EMF - Whenever there is a change in magnetic flux, Electromotive Force - EMF, Faraday's Law - The rate of change of magnetic flux is proportional to the induceded EMF, Lenz Law - The direction of the induced EMF is opposite to the force causing it, John Tyndall - Irish Scientist who explained why the sky is blue ,

All Topics Physics Crossword

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