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How do humans see colour? micro-lesson

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Learning time​

Kids learn by watching short, engaging video lessons.

How does light help us to see color? Light is made-up of tiny particles called photons and these produce different wavelengths, and different colors have different wavelengths. Here is the spectrum of light. Red has the longest wavelength whereas violet has the shortest wavelength. The wavelengths get slower as they go along the spectrum. When light shines on an object, some of the colors are absorbed and some of the colors are reflected. The reflected colors are the ones that we see. When the light first enters our eyes, it needs to pass through the cornea. That helps us to focus the light. Next, the light travels to the pupil which controls how much light we see. After that, it travels to the retina which has different cones and rods and helps us to see different lights and color. Once all of that is done, the optic nerve sends messages to the brain. Phew! What a journey.

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Answer time

Kids earn more screen time by answering fun educational questions.

Here are some example of questions about this video that kids may be asked in the 1Question app to earn screen time.

  • Select the correct sequence of colour entering the eye.

    1) Cornea, pupil, retina, optic nerve
    2) Optic nerve, cornea, pupil, retina
    3) Cornea, retina, optic nerve, pupil
    4) Pupil, cornea, retina, optic nerve
  • What colour has the longest wavelength?

    1) Red
    2) Orange
    3) Pink
    4) Green
  • Name the particles that make up light.

    1) Photons
    2) Photos
    3) Protons
  • What is the role of the cornea?

    1) To adjust the focus of light on the retina
    2) To produce hormones and enzymes
    3) To produce insulin
    4) To produce tear fluid
  • True or false: Wavelengths are faster as they go along the colour spectrum from red to violet.

    1) FALSE
    2) TRUE

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Meet your educator

Our micro-courses are developed and delivered by qualified educators from around the world.

Niamh Clark

Niamh Clark

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