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Light – keyword match Task Draw a straight line to connect each keyword or phrase with its definition. 1) absorbed Light ray bouncing off a surface. opaque When light is taken into a material and not transmitted or reflected. reflection Light rays can pass through. translucent Some light rays can pass through. transmitted Light rays cannot pass through. transparent When light rays pass through a material. refraction Reflecting or radiating light. incident ray The range of coloured light that makes up white light. visible spectrum The light ray hitting a surface. luminous A dark area caused by an opaque object blocking light rays. shadow The angle between the normal and the reflected ray. angle of reflection A ray is bent as it passes from one medium to another. 2) 3) In the light topic what do we use straight lined arrows to represent? Explain why. ............................................................................................................ ............................................................................................................ ............................................................................................................ © www.teachitscience.co.uk 2012 19655 Page 1 of 2 Light – keyword match Answers 1) absorbed When light is taken into a material and not transmitted or reflected. opaque Light rays cannot pass through. reflection Light ray bouncing off a surface. translucent Some light rays can pass through. transmitted When light rays pass through a material. transparent Light rays can pass through. refraction A ray is bent as it passes from one medium to another. incident ray The light ray hitting a surface. Visible spectrum The range of coloured light that makes up white light. luminous Reflecting or radiating light. shadow A dark area caused by an opaque object blocking light rays. angle of reflection The angle between the normal and the reflected ray. 2) 3) Question Straight lines are used to represent light rays, because rays travel in straight lines. The arrow shows the direction the light ray is travelling in. © www.teachitscience.co.uk 2012 19655 Page 2 of 2