Exam 1- Key Terms And Concepts Flashcards
Definition of Wavelength.
What is the Greek symbol for wavelength?
(λ)
The distance between identical points on successive waves
Define Amplitude. Include its Greek symbol
No Greek symbol
Vertical distance from center line to either the peak or trough.
Define frequency with its Greek symbol.
(ν) nu
The number of waves that pass through a particular point in 1 second
Hz= 1 cycles/s
What is the equation for the speed (u) of a wave?
Wave speed= λ(lamda) • ν (nu)
What is the speed of light?
Include units.
2.998 • 10^8 m/s
True or false. Wavelength gets larger from right to left on the electromagnetic spectrum
False. Wavelength gets larger as you go from left to right on the EMS
True or false. Frequency gets less as you look from left to right on the EMS
True. Remember that gamma rays have the highest frequency
What are the classified colors of visible light?
Red Orange Yellow Green Blue Indigo Violet
ROYGBIV
What are the types of radiation on the EMS from left to right?
Gamma rays, X-Rays, ultraviolet, visible light, infrared, microwave, and radio waves
What are the types of radiation from right to left on the EMS?
Radio waves, microwaves, infrared, visible light, ultraviolet, X-Rays, and Gamma Rays
What is the formula for finding the energy of a photon?
E= (h•c)/λ (wavelength)
Which formula would you use for finding the energy of a photon with a wavelength of 5.00 mm?
E= (h•c)/ λ
What is the formula for finding the “work function” of a particle of light?
hν= KE (kinetic energy) + W (the work function)
What is the formula for finding Kinetic Energy of a photon if you know the work function?
KE = hν - W
What is the formula for finding the energy of a photon?
E= (h•c)/λ (wavelength)
