Science · KS2 · Light
KS2 Light Science Practice for Years 3–6
Light science develops from recognising that we need light to see into reasoning about reflection and shadows. Upper KS2 adds the model that light travels in straight lines, helping explain how shadows form and how we see objects.
What to understand in this topic
- distinguish a light source from an object that merely reflects light
- explain that we see most objects because light reaches them and is reflected to our eyes
- predict how blocking light creates a shadow
- use the straight-line model of light for simple explanations
A common point of confusion
The Moon is visible but is not itself a light source in the same way as the Sun or a lamp; it is seen because it reflects sunlight.
Try a quick example
Question: Why does an opaque object make a shadow when placed in front of a lamp?
Answer: It blocks some of the light travelling from the lamp.
Where light is blocked, a darker region forms behind the object.
This is a fixed educational example on the page, not a customer result and not a live tutor response.
What a parent can try at home
With a torch and a small object, change the distance between the light, object and wall. Observe the shadow size. Never look directly at the Sun or shine bright lights into eyes.
How NexEdu practises this
NexEdu can practise concepts, predictions and diagrams about light. It does not replace supervised practical work or eye-safety guidance during investigations.
NexEdu provides guided questions throughout the child’s available daily tutoring time. A hint can follow an incorrect answer, and two consecutive incorrect answers trigger a brief reteach before practice continues. Same-day topic progress can resume where the child left off.
Related learning
About the information on this page
The educational summary helps parents understand the science topic and its place in the National Curriculum in England. Online practice does not replace supervised practical work, safety instruction or professional health advice where relevant.