Flashcards
P1 EMS
Flashcards do conjunto (5)
- 1HERSCHEL: Used a prism to disperse colours from white light onto a screen. Used a thermometer to measure temp of each colour: found out it increased from violet to red. He measured past the red zone and found it contained highest temp: IRRITTER:
Silver Chloride turns white to black in light.
Tested how silver chloride changed when exposed to dif colours of light.
Used a prism to create spectrum and exposed strips of paper to each colour.
It was quick nearer blue end of spectrum.
Quickest past violet part- discovered ultraviolet radiation. - 2EMS: All EM waves are transverse All travel at same speed in a vacuum All merge into each other forming continuous spectrum Grouped by increasing frequency (highest is Gamma rays) And decreasing wavelength (Radio waves has longest)Remember My Instructions: Visible Under X-RAY Glasses =
Radio Waves Microwaves Visible light Ultraviolet X-RAY Gamma rays - 3DANGERS: MW: Can damage brain cells IR: Cause skin burns UV: Cell mutation, skin cancer and even eye damage. Gamma/X-rays: Cell mutation, tissue damage and CancerUses:
RW: Communications
MW: Satellite transmissions, cooking
IR: Heating, remote controls, security cameras
Visible: Photography
UV: Sunbeds
X-Rays: Scan body parts
Gamma: Detect Cancer/ Treatment, sterilizing medical/food equipment - 4IONISING Radiation: Damage cells/increase risk of Cancer An ion is a charged particle Radioactive materials emit ionising radiation.Alpha Radiation:
Particle made up of 2 protons and 2 neutrons
Proton attracts opposites and ionises it
Strong Ionsising- most dangerous on inside - 5Beta Radiation: Particle: fast moving electron Weakly ionisingGamma Radiation: Weakly ionising as has no charge
Highly penetrating - most dangerous on outside
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- FlashCards sobre P1 EMS, criado por ramani.theva14 em 22-10-2014.
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