Law of ReflectionStates that the angle of incidence(direction in) is equal to the angleof reflection (direction out)
ReflectionThe bouncing back of a ray oflight, sound or heat when it hitsa surface
Plane MirrorA mirror with a flat smoothsurface it reflects a ‘true’reversed image– Bathroom Mirror
Concave MirrorA mirror that is curved inward.(Like a bowl) It reflects an uprightlarger image when inside thefocal point and an invertedsmaller image when outside thefocal point– Compact or Make-up mirror
Convex MirrorA mirror that bends outward fromthe center. It reflects a distortedsmaller image but allows you tosee around corners.– Bus mirrors– Security mirrors
DiffractionThe change in direction of wavesas they bend around acorner/edge or around anobstacle or pass through anopening or slit.
RefractionThe bending of light as light wavespass through different mediums
Concave LensA lens that bends inward to center.The light waves move outward as theypass through causing an image on theother side to appear smaller.– Glasses
Convex LensA lens that bends outward from thecenter.
Convex LensAs light passes through, it focusesthe light into a fine beam and thelight and images on the other sideappear larger– Magnifying glasses– Reading glasses
InterferenceThe combination of two or morewaves that results in a single wave.
Essential LearningsLight waves travel in straight linesuntil they strike an object and thenthey are either reflected, absorbedor transmitted
Essential LearningsReflection is the “bouncing back” oflight waves– There is a Law that governsreflection stating that the Angle ofIncidence = Angle of Reflection
Essential LearningsRefraction is the slowing andbending of light waves as lightpasses through a medium
Essential LearningsThere are three types of mirrorsthat reflect light– Plane– Concave– Convex
Essential LearningsPlane Mirror - Reflects a truesized image, upright and reversed
Essential LearningsConcave Mirror –Makesa larger upright imageinside the focal point, asmaller inverted imageoutside the focal point