Light Concept Map

Concept map of year 8 light topic

1. Light concept map For the teacher – first slide shows the whole concept map the second slide shows a developing map to be used in teaching the ideas contained in the map.

2. Light example When it hits a surface it can be Absorbed Reflected Opaque Transparent 1 2 Substance is: Object causes: Object not clear: Translucent Shadow Objects make or reflect light called Luminous Non-Luminous Sun Moon example Speed is: 300 000 000 m/s Much fast than sound which is 343 m/s Reflects On plane shiny surface it: Law of reflection Angle of incidence = angle of reflection Light is represented by: Rays Properties of plane mirror image are:: 1. Image same size as object. 2. Image is upright (not inverted). 3. Image appears as far behind mirror as it is in front. When is passes into a new medium it is: Refracted Caused by Change in wave speed Law states : Wave bends towards the normal in the slower medium. In a prism : Waves are dispersed in to a spectrum.

3. Light example When it hits a surface it can be Absorbed Reflected Opaque Transparent 1 2 Substance is: Object causes: Object not clear: Translucent Shadow Objects make or reflect light called Luminous Non-Luminous Sun Moon example Speed is: 300 000 000 m/s Much fast than sound which is 343 m/s Reflects On plane shiny surface it: Law of reflection Angle of incidence = angle of reflection Light is represented by: Rays Properties of plane mirror image are:: 1. Image same size as object. 2. Image is upright (not inverted). 3. Image appears as far behind mirror as it is in front. When is passes into a new medium it is: Refracted Caused by Change in wave speed Law states : Wave bends towards the normal in the slower medium. In a prism : Waves are dispersed in to a spectrum.