2.8 Flashcards Preview

AQA Science B Unit 2 > 2.8 > Flashcards

Flashcards in 2.8 Deck (13):
1

what do waves do?

transfer energy from a source to other places without any matter being transferred

2

what does electromagnetic radiation travel as?

waves and moves energy from one place to another

3

what is frequency
measured?

no of waves per second produced by a source
hertz Hz

4

order of electromagnetic spectrum
low freq long wave

radio
micro
infrared
visible light
ultra V
x rays
gamma

5

higher frequency of wave...

higher energy

6

velocity (m/) =

frequency (Hz) x Wavelength (m)

7

radio waves

TV and radio

8

microwaves

mobile phones
satellite
tv
cooking

9

infrared

remote controls

10

visible light

fibre optic cables

11

uv

sun beds

12

why are x rays and gamma not used in home?

damage the body

13

what are x rays and gamma used in?

medicine for x rays and radiotherapy