Electromagnetic spectrum Flashcards
Name the waves in the electromagnetic spectrum
Radio waves, microwaves, Infrared, Visible light, ultraviolet, x rays, and gamma rays.
How does electromagnetic waves transfer energy
Through vibrations of electric and magnetic fields
Transverse or longitudinal wave
Transverse
What happens as energy increases?
Frequency increases and wave length decreases
Which waves are only detected by the human eye
Visible light rays
Do electromagnetic waves travel through matter to transfer energy?
No they travel through a light vacuum
What speed do electromagnetic waves travel at?
The same speed - 3x108 (Speed of light)
What are gamma rays used for
Cancer treatment and sterilisation
What are X-Rays used for
Medical purposes (X rays)
What are ultra violet rays used for
Sun beds
What is visible light used for
To make objects visible
What is Infrared waves used for
Remote controls and heat transfer
What are microwaves used for
Satellites and phones
What are radio waves used for
Communications
What does ROYGBIV stand for
Red, Orange, Yellow, Green, Blue, Indigo, and Violet (Colours of the visible light)
