Electromagnetic Waves Flashcards
What are all the waves on the electromagnetic spectrum?
Radio waves Microwaves Infrared radiation Visible light Ultraviolet light X rays Gamma rays
What is the only wave on the electromagnetic spectrum that our eyes can detect?
Visible light
What are the colours of visible light?
Red, orange, yellow, green, blue, indigo, violet
What are the types of radio waves?
Long wave, short wave, very short wave
Why might electron arrangements change?
The absorption of electromagnetic radiation
What colour is the best at absorbing infrared radiation?
Black
What colour reflects infrared radiation?
Silver
How do you investigate the emission of infrared radiation?
- Fill a leslie cube with hot water
- Replace lid
- Measure each side with infrared thermometer
- Record results
Uses of radio waves
Communication
Uses of microwaves
Cooking, satellite communication
Uses of infrared
Thermal imaging, TV remotes, illness treatments
Uses of light
Sight, rainbows
Uses of UV
Checking for forgery, tanning
Uses of x rays
Medical applications, see inside bodies, airports
Uses of gamma rays
Sterilising, medical imagery, CT scans, treating cancer
