Uses of electromagnetic waves Flashcards
1
Q
State the uses of radio waves
A
transmitting television, mobile phone, and Bluetooth signals
2
Q
State the uses of microwaves
A
satellite communications, cooking food
3
Q
State the uses of infra red radiation
A
heating, remote controls, infrared cameras, cooking food
4
Q
Which types of EM waves are harmful to the human body?
A
ultraviolet, X-rays, gamma rays
5
Q
State the hazards of being exposed to ultraviolet radiation
A
damage skin cells, sunburn, increase risk of skin cancer, age skin prematurely, blindness
6
Q
Explain why X-rays are used for medical imaging
A
they pass through flesh but are absorbed by bone
7
Q
Explain why gamma rays are used for treating cancer and sterilising medical equipment
A
high doses kill cells and bacteria
