Light and the Electromagnetic Spectrum Crossword Puzzle

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Light and the Electromagnetic Spectrum Crossword Puzzle

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QUESTIONS LIST: reflection : the law of _ states that the angle of incidence equals the angle of reflection. [10] , refraction : when light changes speed and direction as it enters glass from air. [10], luminous : an object that emits its own light. [8], transparent : something you can see through. [11], opaque : something that light cannot pass through. [6], radio waves : the part of the electromagnetic spectrum with the longest wavelength. [5, 5], microwave : used to cook food. [9], infrared : used by snakes to observe their prey. [8], convex : type of lens that focuses rays of light. [6], concave : type of lens that spreads out rays of light. [7], yellow : third colour in the rainbow. [6], indigo : sixth colour in the rainbow. [6], red : colour of light reflected by a post box. [3], visible : the part of the electromagnetic spectrum we can see. [7], xray : used to detect broken bones. [1, 3], suncream : used to protect skin from ultraviolet light. [8], ultraviolet : used to sterilize drinking water. [11]