P2 RADIATION LIFE Flashcards
1
Q
At what speed does the waves in the electromagnetic spectrum travel at in a vacuum?
A
300 000 km/s
2
Q
what is the order of the electro magnetic spectrum? starting from the lowest energy & frequency to high energy and frequency
A
radio waves microwaves infrared viable spectrum UV X Ray's gamma rays
3
Q
How does electromagnetic waves transfer energy?
A
in packets called photons
4
Q
how does solar cells produce electricity?
A
worked by absorbing electromagnetic radiation from the sun
5
Q
What does the intensity of an electromagnetic wave depend on?
A
- the number of photons per second
- the energy transferred by each photon
