The new national curriculum introduced in 2014 requires children in year 3 to understand that they need light to see and that light is reflected from surfaces.
What is a light source year 3.
Children could model how light travels from different sources in a straight line and how light is reflected from certain surfaces changing the direction it travels.
Answered a light source generates light using another form of energy such as heat or electricity.
What is a light source.
So when we see this star today we re actually seeing it as it was 4 3 years ago.
Light is an energy source that travels in waves and we can see these wavelengths of light in different colors.
Stars are found in large groups called galaxies.
They will explore shadows and learn how shadows are formed when a light source is blocked by an opaque item.
Though aimed at older children the idea of modelling light using a ribbon and other techniques used in this short demonstration could be used in year 3.
They discuss what a light source is how most light sources are powered and why different rooms have different numbers of light sources.
A galaxy can have millions or billions of stars.
In year 3 children begin to fully explore light.
All of the other stars we can see with our eyes are farther some even thousands of light years away.