Shadows and Reflections
Outdoors shadows are longest at sunrise and sunset.

Shadows and Reflections

As a part of their study of Science, children in KS2 will look at light. This quiz is about how light interacts with objects, forming shadows and reflections. It also looks at transparent, translucent and opaque objects.

Shadows and reflections are the effects of light. Shadows are formed when objects block a source of light. Night is caused by the Earth blocking the light from the Sun - on the half of the Earth in shadow it is night time. Even at night time you can usually see some light - maybe from streetlamps, the moon, the stars or the headlamps of passing cars. Have you ever been anywhere so dark that you couldn't see your hand in front of your face? Reflections are caused by light bouncing off objects. Smooth things usually make better reflectors than rough ones. Mirrors are very smooth and they are the best reflectors.

How much do you know about shadows and reflections? Find out by taking this quiz.

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  1. You are making shadows with a torch and one hand. What could you do to make the shadow bigger?
    Moving an object nearer to the source of light makes its shadow bigger
  2. Which one of the following objects is not translucent?
    A sheet of glass is transparent - it lets light pass straight through
  3. What happens when light hits a reflective material?
    Mirrors are very good reflectors
  4. Which of the following would reflect the most light?
    A smooth, shiny object with flat surfaces, such as a mirror, will reflect the most light
  5. Light travels in a straight line. How can it be made to travel around an obstacle?
    Mirrors can be used to change the direction of light - that's how periscopes in submarines work
  6. Outdoors, shadows are longest at what time of day?
    The Sun is at its lowest point in the sky at those times
  7. What causes shadows?
    Shadows are dark patches caused by less light hitting them
  8. How does an opaque material affect light?
    Most solid objects are opaque
  9. Light reflects off which of these materials?
    Light reflects off nearly all materials - light travels from its source, reflects off an object, changes direction and enters our eyes, allowing us to see the object
  10. Which one of the following is not a source of light?
    The Moon is not a source of light; it only reflects light from the Sun

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