What happens to light when it enters a denser material?, Speeds up and bends away from the normal, Slows down and bends towards the normal, Speeds up and bends towards the normal, Slows down and travels straight, Which surface produces specular reflection?, Carpet, Brick wall, Rough wood, Mirror, Which colour has the shortest wavelength?, Green, Yellow, Violet, Red, What is the unit of frequency?, Joules, Watts, Hertz, Newtons, Which lens is used to correct near-sightedness?, Convex, Concave, Prism, Cylinder, What is the useful energy output of a light bulb?, Heat, Sound, Light, Chemical, What type of energy transfer occurs when sound travels?, Mechanical, Heating, Waves, Electrical, Which colour of light is refracted the most in a prism?, Violet, Blue, Green, Red, Why can't sound travel in space?, There is too much gravity, There is no light, There are no particles, It is too cold, What is the angle between the incident ray and normal called?, Angle of reflection, Angle of incidence, Angle of refraction, Angle of deviation
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Yr. 7
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