Electromagnetic Waves Flashcards
(24 cards)
Electromagnetic waves are what type of waves?
transverse
What are the 2 parts of the wave?
electric field and magnetic field
How are electromagnetic waves produced? (2 ways)
by constantly changing fields/when a charge vibrates or accelerates.
Electromagnetic waves can travel through.. (2 things)
vacuum and a medium
The transfer of energy through electromagnetic waves through space is called
Electromagnetic radiation
The speed of light is..
3.00 x 10^8
Electromagnetic waves vary in (2 things)
wavelength and frequency
Formula for electromagnetic waves is
wavelength x frequency
When does electromagnetic radiation act like a wave?
when its a light
When does electromagnetic radiation act like a particle?
when its a blue light due to the photoelectric effect
Photoelectric affect?
when an emission of electrons from a metal is caused by light striking the metals
the intensity of a light increases when..
a photon travels closer to the source
Name 5 types of waves
radio waves, infrared, visible light, ultraviolet rays, gamma rays
What type of wave is used to kill cancer cells?
Gamma rays
what wave is a source of heat?
infrared
3 descriptions of material on how light behaves..
transparent, translucent & opaque
3 types of reflections
regular, diffuse, refraction
how does the sun change colors at sunrise/sunset?
scattering
what generates an electric field?
electric current
what generates an electric charge?
moving magnetic fields
electric and magnetic waves are
a. parallel
b. perpendicular
perpendicular
energy produced by electromagnetic waves?
radiation
the more left of the electromagnetic spectrum you go the _______ the wavelength
a. greater
b. smaller
greater
the more left of the spectrum you go the ————— the frequency
a. greater
b. smaller
smaller
