The electromagnetic spectrum (using waves) Flashcards
(19 cards)
What is the order of the wave in the electromagnetic spectrum?
- radio waves
-microwaves
-infrared waves
-visible light
-ultra violet waves
-X rays
-gamma rays
As you move through the spectrum what happens to the wave length?
Long wavelength —> short wavelength
As you move through the spectrum what happens to the frequency?
Low frequency —> high frequency
As you move through the spectrum what happens to the energy?
Low energy —> high energy
Uses of radio waves?
-broadcasting and communications
Uses of microwaves?
-cooking and satellite transmissions
Uses of infrared?
Heaters and night vision equipment
Uses of visible light?
Optical fires and photography
Uses of ultraviolet?
Fluorescent lamps
Uses of x-rays?
Observing of the internal structure of objects and materials and medical applications.
Uses of gamma rays?
Sterilising food and medical equipment
What are potential dangers of microwaves for the human body?
Internal heating of body tissue
What are the potential dangers of infra-red for the human body?
Skin burns
What are the potential dangers of ultraviolet for the human body?
Damages to surface cells and blindness
What are the potential dangers of gamma for the human body?
Cancer, mutation
What is a simple protective measure against microwaves?
- Ensure the microwave oven is properly sealed and that the door is closed when in use.
What is a simple protective measure against infra-red?
wear protective clothing, such as oven gloves
What is a simple protective measure against ultraviolet?
wearing sunglasses with UV-blocking lenses and applying sunscreen with high SPF
What is the simple protective measure against gamma rays?
using shielding made of dense materials like lead.
