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Energy - Light Sources
When the Sun has gone down, the only light comes from the Moon, stars and lamps.

Energy - Light Sources

Light sources help us see in dark places. Explore the Sun, lamps, torches and candles, and find out which objects make their own light.

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Fascinating Fact:

Lamps and bulbs. When we switch them on, electricity makes the bulb shine. Cosy room light.

In KS1 Science, children learn that some things, like the Sun and lamps, are light sources because they give out light. Other objects are seen only when light shines on them.

  • Light source: Something that makes its own light, such as the Sun, a lamp or a torch.
  • Reflective object: An object that bounces light from a source, like a mirror or shiny metal.
  • Electricity: A form of energy that can power lamps and bulbs so they produce light.
What are light sources in KS1 science?

In KS1 science, light sources are things that give out their own light. Examples include the Sun, candles, lamps, torches and some screens, but not the Moon or mirrors.

How do I explain the difference between light sources and reflectors?

A light source makes light. A reflector, like a mirror or road sign, only sends back light from a source. Children can test this using a torch in a dark room.

Why is the Sun an important light source for children to know about?

The Sun is our main natural light source. It helps us see in the daytime, keeps Earth warm, and supports plant growth, so it is central in KS1 learning about light.

1 .
What do we use to light our homes?
The Moon
Wind
Stars
Electricity
Not just our homes - our streets, schools and factories all use electric lights
2 .
The Moon shines at night. But the Moon is not like the Sun. The Moon does not make its own light. The Moon reflects light from:
Street lights
House lights
The Sun
Glow worms
Sometimes you cannot see all of the Moon. Have you ever seen a crescent-shaped Moon?
3 .
This is a torch. It produces light. The torch has batteries. What makes the light in a torch?
Gas
Wax
Magnets
Electricity
The electrical energy is turned into light energy
4 .
The sun makes lots of light. At night, you cannot see the sun. What can you see in the sky at night?
The Sun
Oceans
Stars
Rivers
There are millions of stars. Stars make light. They are like the Sun, but they are a very long way away. That’s why they look so small
5 .
These candles are burning. They make heat and _____ .
Sound
Light
Electricity
Ice
Fires produce light as well as heat
6 .
Mirrors do not make their own light. Mirrors just _______ light.
Reflect
Replace
Destroy
Eat up
Light bounces off mirrors. Light reflects off mirrors
7 .
Mrs Smith is polishing her car. It is very shiny. The light is:
Bouncing off the car
Not touching the car
Lifting the car up
Weighing the car down
Light bounces off shiny things
8 .
Where does daylight come from?
The Moon
The Sun
The stars
Street lights
Remember, never look directly at the sun - it is very dangerous
9 .
In the picture, it is getting dark. When it is completely dark:
There is only a little bit of light
There is still lots of light
There is plenty of light
There is no light
If there is no light at all, then it is completely dark
10 .
This minibeast is very unusual. It is called a glow worm. Why do you think it is called a glow worm?
It is nice to look at
It makes its own light
It is very colourful
It is a very happy minibeast
That’s right - it glows in the dark. Fireflies also make their own light
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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