Reflections in mirrors
I can explain why reflections (images) are seen in mirrors and describe the properties of mirror images.
Reflections in mirrors
I can explain why reflections (images) are seen in mirrors and describe the properties of mirror images.
Lesson details
Key learning points
- Light reflects from mirrors obeying the laws of reflection. Some reflects into our eyes causing an image to be seen.
- The image in a mirror is located where the light rays seem to have come from.
- A reflection appears to be directly opposite the object, the same distance behind the mirror as the object is in front.
- The image in a mirror is the right way up but is laterally inverted.
Common misconception
Ideas about the nature of light and reflections are often taken for granted at this stage and simple misconceptions often persist, e.g. that all reflections appear to be on the surface of mirrors.
Give pupils practical experience of systematically investigating reflections, e.g. measuring the apparent location of a mirror image. Explicitly assess for misconceptions about the location and visibility of mirror images of an object.
Keywords
Reflection - this word has two meanings: 1. the process of light 'bouncing off' a surface, 2. an image seen in a mirror
Image - a representation of an object
Laterally inverted - describes an image that has been 'flipped' horizontally (as occurs in mirror images)
Equipment
Transparent plastic or glass that can stand vertically (e.g. safety screens), candles/LEDs, clamp stands (if necessary), rulers/meter rules (depending on the size of other equipment used).
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
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