P5.2.1 - Electromagnetic Waves Flashcards
1
Q
What is a spectrum?
A
An order of colours that is blended together (like a rainbow)
2
Q
What spectrum is white light apart of?
A
Electromagnetic spectrum
3
Q
What frequency of waves can we see?
A
Visible light
4
Q
Name the electromagnetic spectrum in order of frequency.
A
Radio waves, micro waves, infrared waves, visible light, ultraviolet, X rays and gamma rays
5
Q
What do electromagnetic waves consist of?
A
Oscillating electric and magnetic field
6
Q
What do all electromagnetic waves travel through?
A
Vacuum (3 * 10^8)
7
Q
Electromagnetic waves transfer energy from sources to where?
A
Absorbers
8
Q
What is the wavelength of visible light?
A
A fraction of a millimetre
