Loading please wait

The smart way to improve grades

Comprehensive & curriculum aligned

Try an activity or get started for free

Explain How Light Travels

In this worksheet students will be introduced to the topic of light. It defines luminous objects, the speed and direction of light and how shadows are formed.

'Explain How Light Travels' worksheet

Key stage:  KS 3

Year:  Year 8 Science worksheets

Curriculum topic:   Physics: Waves

Curriculum subtopic:   Light Waves

Difficulty level:  

Worksheet Overview

Light is a form of energy and travels as a wave in straight lines. We see things when light hits them and bounces off and enters our eyes. Objects that create light are sources of light and we call them luminous objects, for example, the Sun. We see them because light from them enters our eyes. Light bounces off non-luminous objects (for example, the moon) and we see them because that light enters our eyes once it has bounced off the object.


the Sun


Light travels faster than sound. We know this because of examples such as thunder and lightning - we see the lightning first and then hear the thunder, but they actually occur at the same time. Another example is dropping an object such as a book - we will see the book hit the floor before we hear the thud. The speed of light is 300,000 km/s (kilometres per second). It takes 8 and a half minutes for light from the Sun to reach the Earth. 




When we shine a laser ray (a very narrow beam of light) we can see that light travels in a straight line. Shadows are made because light does not travel through some objects, and so a shadow appears behind these objects (on the opposite side to the light source).


Laser beam

What is EdPlace?

We're your National Curriculum aligned online education content provider helping each child succeed in English, maths and science from year 1 to GCSE. With an EdPlace account you’ll be able to track and measure progress, helping each child achieve their best. We build confidence and attainment by personalising each child’s learning at a level that suits them.

Get started

Try an activity or get started for free