state that all electromagnetic waves are transverse waves that travel with the same speed in vacuum and state the magnitude of this speed
describe the main components of the electromagnetic spectrum
state examples of the use of the following components:
(i) radio waves (e.g. radio and television communication)(ii) microwaves (e.g. microwave oven and satellite television)(iii) infra-red (e.g. infra-red remote controllers and intruder alarms)(iv) light (e.g. optical fibres for medical uses and telecommunications)(v) ultra-violet (e.g. sunbeds and sterilisation)(vi) X-rays (e.g. radiological and engineering applications)(vii)gamma rays (e.g. medical treatment)
LESSON VIDEOS
12.1a EM Waves
12.1b Properties of EM Waves
12.2 Applications of EM Waves
I DO, YOU DO, WE DO! LET'S PRACTICE!
WS 12.1 Application and Effect of EM Waves.pdf
WS 12.1
OTHER INTERESTING VIDEOS
The Electromagnetic Spectrum Song
APPLETS TO TRY!
This applet helps you to see how microwave is used to heat up food.