Science W1 - Electromagnetic Waves Flashcards
are disturbances that are used to transfer energy from one place to another without transferring matter
waves
highest point of a wave
crest
lowest point of a wave
trough
the vertical distance between the tip of a crest and the wave’s central axis
amplitude
refers to the number of full wavelengths that pass by a given point in space every second
frequency
the SI unit for frequency
Hertz (Hz)
the horizontal distance between two consecutive troughs or crests
wavelength
unit of measurement for wavelength
meter (m)
the symbol used for wavelength
lambda (λ)
2 types of waves
mechanical and electromagnetic
a wave that is an oscillation of matter that requires a medium
mechanical wave
3 general types of mechanical waves
transverse
longitudinal
combined
a mechanical wave where particle motion is perpendicular to wave motion
transverse wave
a mechanical wave where particle motion is in the same direction as wave motion
longitudinal wave
are like sea waves
combined wave
a type of wave formed when an electric field comes in contact with a magnetic field. These waves are transverse.
electromagnetic wave
an electrical and magnetic disturbance that moves through space at the speed of light. They are waves created as a result of vibrations between an electric and magnetic field.
electromagnetic waves
speed of light and electromagnetic waves
3.0×10⁸ m/s
2 fields composing an electromagnetic wave
electric field and magnetic field
field created by charged particles
electric field
field produced by moving electric charges
magnetic field
a region around a charged particle where a force would be exerted on other charged particles
electric field
a region around a magnetic material or a moving electric charge within which the force of magnetism acts
magnetic field
a Scottish physicist who predicted the existence of electromagnetic waves in 1862
James Clerk Maxwell
a German physicist who confirmed Maxwell’s theory that waves other than light exist
Heinrich Hertz
are oscillations that may occur at very low frequency or at an extremely high frequency and the entire range of frequencies
electromagnetic spectrum
a range of electromagnetic waves that extends from the longest wavelengths of radio waves up to the high frequency of gamma rays
electromagnetic spectrum
waves with the longest wavelengths and lowest energy
radio waves
waves with the second longest wavelengths and second lowest energy
microwaves
waves that are used by mosquitoes to find warm-blooded animals
infrared waves
waves that fall within the color spectrum
visible light
waves seen by bees and are in pollen guides from flowers
ultraviolet
waves with the second shortest wavelengths and the second highest energy
x-rays
waves with the shortest wavelengths and highest energy on the spectrum
gamma rays
planets
radio waves
heat lamps
infrared
color spectrum
visible light
hospitals
x-rays
shortest wavelengths
gamma rays
As the wavelength decreases, the frequency _________?
increases
As the wavelength increases, the frequency _________?
decreases
Each type of wave occupies a particular range of wavelengths known as?
band
