Electromagnetic Waves Flashcards
Electromagnetic spectrum order
Radio
Microwave
Infrared
Visible
Ultraviolet
X-ray
Raw meat is very unsanitary eXcept giraffe
Radi
Microwave
Infrared
Visible
Uv light
X-ray
How many complete circuits can light travel around the earth
8
Radio waves ?
Used for radios and tv communication
Can travel great distances around the earth as the are reflected off the ionosphere in the upper atmosphere
Why can radio waves travel great distances around the earth
Because they are reflected off the ionosphere
What are microwaves used for
Heat up food in the kitchen
Also explains how your phone works
How do microwaves work
They make water molecules vibrate generating heat but doesn’t penetrate the food to any extent
(Microwave) food heats up from the outside….
Relying on conduction to heat up regions deeper in material
Which part of the electromagnetic spectrum can animals detect
Infrared
What can infrared be used for
To cook
Warm our homes when we’re using radiators
Tv remotes also use these signals
What speed do all electromagnetic waves travel in a vacuum
They all travel the same which is 300 000 000 m/s
What do different materials do to electromagnetic waves
Absorb
Transmit
Reflect
