topics 1 2 3 physics flashcards

flash cards for important words lists and formulas required for the p1 exam i  topics 1 2 and 3 

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  • Created by: Chloe
  • Created on: 06-03-13 14:54
wavelength
distance from one peak to the next
1 of 15
amplitude
height of the waveq
2 of 15
frequency
number of complete waves per second : Hertz
3 of 15
wave speed
how fast a wave travels
4 of 15
wave speed equation
frequency x wavelength (Hz x m) OR distance / time (m x s)
5 of 15
em spectrum
radiowaves, microwaves, infrared, visible light, ultraviolet, X-rays, gamma rays
6 of 15
infrared uses
cooking eg grills toasters, remote controls, mobile phones or computers over short distances, security sensors
7 of 15
danger microwaves
heat human body cells: phones could cause brain tumours????????
8 of 15
Infrared danger
heat, carry more energy than microwaves, SKIN BURNS
9 of 15
ultraviolet danger
IONISING: knock electrons off atoms, SUNBURN: absorbing UV rays, cell mutation or destruction, SKIN CANCER and EYE DAMAGE
10 of 15
gamma rays/ x rays
ionising, high frequency, carry more energy, penetrate further into body, CELL MUTATION or DESTRUCTION, lead to tissue damage CANCER
11 of 15
gamma and ionising radiation uses
radiotherapy: treats cancer using gamma rays, sterilise food and medical equipment
12 of 15
SETI
search for extra terrestrial intelligence
13 of 15
problem with telescope on earth
light pollution from urban areas, atmosphere absorbs light from space, air pollution from earth and space
14 of 15
star life cycle
Nebula, main sequence star: (small star)- planetary nebula, (large star)- supernova, neutron star, black hole
15 of 15

Other cards in this set

Card 2

Front

amplitude

Back

height of the waveq

Card 3

Front

frequency

Back

Preview of the front of card 3

Card 4

Front

wave speed

Back

Preview of the front of card 4

Card 5

Front

wave speed equation

Back

Preview of the front of card 5
View more cards

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