electromagnetic waves Flashcards
1
Q
What are electromagnetic waves?
A
Electromagnetic radiation can travel through a vacuum.
2
Q
what speed to electromagnetic waves travel at?
A
All electromagnetic waves travel at the same speed in a vacuum - the speed of light.
3
Q
Why is it called a spectrum?
A
the electromagnetic spectrum is a continuum of waves.
4
Q
What are the longest/shortest wavelengths?
A
Radiowaves have the longest wavelengths and gamma rays the shortest.
