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      Reflected light: do and review

      Lesson details

      Learning outcome

      I can carry out and review an investigation to compare different materials based on how reflective they are.

      Key learning points

      1. When light travels towards a surface and bounces off it, this is called reflected light.
      2. A data logger can be used to record the amount of light reflected from different surfaces in lux.
      3. The results of an investigation can be recorded in a table and used to make decisions about different materials.
      4. The best surfaces for reflecting light are very smooth, such as a glass mirror or polished metal.
      5. Scientists evaluate every stage of an investigation to suggest improvements.

      Keywords

      • Reflect - To reflect light is when light hits a surface and bounces off.

      • Surface - The surface is the top or outside layer of something.

      • Result - The result of a test or enquiry is what happened or what was found out.

      • Evaluate - To evaluate is to think about what you did and suggest any changes or improvements.

      • Improvement - An improvement is when something gets better or when you make it better.

      Common misconception

      All materials reflect the same amount of light.

      Explanation that we can measure the differing amounts of light reflected by different materials.

      Teacher tip

      This lesson follows lesson 10. Pupils will need their plans to complete their investigations into how much light is reflected by different materials. Make the room as dark as possible while testing materials. See video to demonstrate aspects of working scientifically linked to this lesson's content.

      Equipment

      Rulers, data loggers, torches, materials: white card, black card, foil, baking paper, plastic bag, cotton fabric, mirror, laminated paper.

      Content guidance

      Exploration of objects

      Supervision

      Adult supervision recommended

      Licence

      This content is © Oak National Academy Limited (2026), licensed on Open Government Licence version 3.0
      except where otherwise stated. See Oak's terms & conditions
      (Collection 2).

      Lesson video

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      Prior knowledge starter quiz

      6 Questions

      Q1.
      When light is reflected, it ...

      hits a surface and creates a shadow.
      Correct answer: hits a surface and bounces off.
      hits a surface and disappears.

      Q2.
      Which of these is a light source?

      Correct answer: the Sun
      Correct answer: a TV
      the Moon
      Earth
      Correct answer: a torch

      Q3.
      Which of these is needed to reflect light?

      Correct answer: a surface
      a ruler
      a shadow
      Correct answer: a light source

      Q4.
      Which word describes a surface that sends back most of the light that shines on it?

      Correct Answer: reflective

      Q5.
      Which of these can we use to record how much light there is?

      a stopwatch
      a measuring cylinder
      Correct answer: a data logger

      Q6.
      Light is measured in ...

      tux.
      Correct answer: lux.
      flux.

      6 Questions

      Q1.
      What is reflected light?

      Light that has travelled through a material.
      Light that has been absorbed by a material.
      Correct answer: Light that has bounced off a surface.

      Q2.
      What do we use to measure the amount of light?

      a thermometer
      Correct answer: a light sensor
      a ruler

      Q3.
      What are the results of an investigation?

      A plan for an investigation.
      How you will do an investigation.
      Correct answer: The data you collected during an investigation.

      Q4.
      The results below have been recorded in a .....

      An image in a quiz
      gragh.
      diagram.
      chart.
      Correct answer: table.

      Q5.
      What kind of materials reflect the most light?

      Correct answer: Very smooth materials such as mirrors.
      Very dark materials such as black card.
      Very dull materials such as baking paper.

      Q6.
      What do scientists do when they evaluate an investigation?

      They do the whole investigation again.
      Correct answer: They suggest ways to improve it.
      They choose a different question to answer.

      To help you plan your 3 science lesson on: Reflected light: do and review, download all teaching resources for free and adapt to suit your pupils' needs...