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Energy - Light and Shadows
Can you make shadow puppets like the bird made by this lady?

Energy - Light and Shadows

Light helps us see and shadows help us explore shapes. Discover how light travels, why shadows form, and what changes their size.

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Fascinating Fact:

You can make shadows. Stand in front of a lamp or go outside in the sun. Your body blocks the light and makes a shadow.

In KS1 Science, children find out that we need light to see. They explore how light shines from a source, how objects can block it, and how this creates shadows.

  • Light source: Something that gives out light, such as the Sun, a lamp or a torch.
  • Shadow: A dark shape made when an object blocks light from reaching a surface.
  • Opaque: A material that does not let light pass through it.
How do you explain light and shadows to KS1 children?

Explain that light travels from a source into our eyes so we can see. When an object blocks the light, a dark shape called a shadow appears on the surface behind it.

Why do shadows change size and shape during the day?

Shadows change because the position of the light source changes. As the Sun moves across the sky, the angle of the light changes, making shadows longer, shorter or in different directions.

What simple KS1 activities teach about light and shadows?

Children can use torches and toys to make shadows on a wall, draw around outdoor shadows at different times, and sort objects into those that block light and those that let light through.

1 .
What is this shadow puppet?
A rabbit
A cow
A sheep
A fox
Can you make shadow puppets?
2 .
There is a shadow on the field. What is up in the air?
Bale of straw
Grass
Hot air balloon
Helicopter
Shadows don’t have to touch the thing that makes them
3 .
What do we call lines of sunlight?
Shadows
Rulers
Rays
Clouds
The rays of the sun go in straight lines
4 .
The light is being blocked by Gareth. The light cannot go through Gareth. Gareth is ______.
Transparent
Elastic
Plastic
Opaque
Gareth is casting a shadow
5 .
Sarah is asleep in bed. The light is on. Sarah casts a shadow on the pillow. Sarah’s Mum comes in and quietly turns off the light. What happens to Sarah’s shadow?
Sarah’s shadow gets darker
Sarah’s shadow disappears
Sarah’s shadow gets bigger
Sarah’s shadow gets smaller
If there is no light, there are no shadows
6 .
Look at this picture. These are shadows of a family in a park. There is a pram, a man and a child. The shadows are:
Longer than the real things
Shorter than the real things
Brightly coloured
Brighter than the grass
These shadows are very long. But your shadow can be longer or shorter than you really are
7 .
This is a picture under a leaf. The frog is casting a shadow. Where is the frog?
Under the leaf
On top of the leaf
Inside the leaf
Nowhere near the leaf
This is a tree frog in South America
8 .
Look at the picture carefully. What can you see?
Two people beside a wall
The shadows of two people
One real person and one shadow
A mirror on the wall
When do you have a shadow?
9 .
What do we call lots of rays of light?
A shadow
A wedge
A door
A beam
A torch makes a beam of light
10 .
Gareth is standing looking at his shadow. Which direction is the Sun?
To the right
To the left
Straight above Gareth’s head
Under Gareth’s feet
Gareth is blocking the sunlight. That’s why he has a shadow
You can find more about this topic by visiting BBC Bitesize - What is light?

Author:  David Bland (Former Physics Teacher, KS1 Science & Geography Quiz Writer)

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