Electromagnetic Spectrum Flashcards
1
Q
What is included in the electromagnetic spectrum
A
Radio, microwave, infrared, visible, ultraviolet, x-ray and gamma ray
2
Q
What colour has the longest wavelength
A
Red
3
Q
What colour has the shortest wavelength
A
Violet
4
Q
Order of electromagnetic frequency from longest wavelength and lowest frequency to shortest wavelength and highest frequency
A
- radio waves, microwaves, infrared, visible light, ultraviolet, x-ray, gamma rays
5
Q
Uses and dangers of radio waves
A
- telecommunications, tv, radio
None
6
Q
Uses and dangers of microwaves
A
- cooking food, (satellite) communication, RADAR
- radiations from microwaves are harmful, causes internal damage to tissues
7
Q
Uses and dangers of infrared
A
Short range communications, thermal imaging cameras, cookers, heating night-vision
- raises internal temperature of eye
8
Q
Uses and dangers of visible light
A
- concentrated to make lasers (surgery, CD players), predicts weather
- some light can be so intent and cause temporary or permanent blindness
9
Q
Uses and dangers of ultraviolet
A
- sterilise surgery equipment, treating vitamin D deficiency, sun beds, cancer treatment, photography, discos
- skin cancer, damages eyes, premature skin aging
10
Q
Uses and dangers of x-rays
A
- x-ray radiography, medical imagery, security
- increased risk to cancer
11
Q
Uses and dangers of gamma rays
A
- sterilise food or medical equipment, cancer treatment, observing the universe
- rays are ionising and can ionise cells causing cancer
