ELECTROMAGNETICS EXAM SCRIPT FULL QUESTIONS AND CORRECT ANSWERS GRADED A+

ELECTROMAGNETICS EXAM SCRIPT FULL
QUESTIONS AND CORRECT ANSWERS
GRADED A+

●● Electromagnetic Radiation
Answer: The energy transferred through space by electromagnetic
waves.


●● Do electromagnetic waves require a medium?
Answer: No, they can travel through a vacuum.


●● What causes electromagnetic waves?
Answer: Electromagnetic waves are caused by the movement of charged
particles.


●● What are the two models of light?
Answer: The two models of light are the particle model and the wave
model.


●● Wave Model of Light
Answer: A way of explaining the behavior of light using waves; explains
wave properties and polarized light.

, ●● Particle Model of Light
Answer: A way of explaining the behavior of light using photons;
explains the photoelectric effect.


●● Photon
Answer: A particle of electromagnetic radiation with no mass that carries
a quantum of energy.


●● Photoelectric Effect
Answer: The emission of electrons from a metal when high-frequency
light (and/or UV rays) shines on the metal.


●● What are the properties that EM waves share with other waves?
Answer: Electromagnetic waves have amplitude, frequency, wavelength,
wave speed, and energy.


●● All electromagnetic waves travel at what speed in a vacuum?
Answer: In a vacuum, all electromagnetic waves travel at the same
speed: the speed of light. Frequency and wavelength vary.


●● High Frequency
Answer: Short wavelength, high energy.