Physics GCSE: Waves and communication

Jon Chase demonstrates how electromagnetic waves are used in communication using an infra-red remote control and an outside TV broadcast.

He discusses how television broadcast uses microwaves to communicate between Earth and satellites in space.

Jon describes and performs a rap about the electromagnetic spectrum and the different types of waves.

This short film is from the BBC series, Space Science Bites.

Teacher Notes

Your class could use the rap to create their own rhyme or mnemonic to remember the order of the different types of radiation in the electromagnetic spectrum.

Diagrams could be produced to explain how we can watch live sport from the other side of the world.

Students could calculate the time taken to reach Earth of a signal from an artificial satellite or from the Moon or the delay in live broadcasts.

Divide the class into groups, each of which researches the uses and or dangers of electromagnetic waves from specific parts of the spectrum.

Curriculum Notes

This short film will be relevant for teaching physics.

This topic appears in OCR, Edexcel, AQA, WJEC KS4/GCSE in England and Wales, CCEA GCSE in Northern Ireland and SQA National 4/5 in Scotland.

More from Space Science Bites:

Gravity on Earth and in space
video
The life cycle of stars
video
Nuclear fusion in stars
video
The Big Bang and red shift
video
Spectroscopy and the composition of stars
video