What is the order of waves on the electromagnetic spectrum from smallest to largest?
400
A node is when a standing waves hits the line of equilibrium.
What is a node?
400
f = 55 kHz = 55,000 Hz v = fλ
λ = 5.0 m v = 55,000 Hz(5.0 m)
v= 275,000 m/s
What is the velocity of a wave with a wavelength of 5 m and a frequency of 55 kHz?
400
Refraction happens when the wave's velocity is changed due to a change in medium while reflection is simply a bouncing back of a ray.
What is the difference between refraction and reflection?
400
Th Doppler effect happens when a sound that is far away from you sounds higher in pitch and then after passing you sounds lower in pitch.
Describe the Doppler effect.
500
Polarization requires particles to moving in a different direction than direction of travel, like in transverse waves, but in longitudinal this isn't possible.
Why can't longitudinal waves be polarized?
500
Energy is directly proportional to the square of the wave amplitude. Bigger amplitude means even more energy being transferred.
How is energy and amplitude related?
500
v = 3.00 m/s v = fλ f = 1/t
λ = 1.5 m 3.00 m/s = f(1.5m) 2.0 Hz = 1/t
2.0 Hz = f .5 s = t
A wave has a velocity of 3.00 m/s and a wavelength of 1.5 m. Find its period.
500
Constructive waves are when two or more waves run into each while both on the same side of the medium, ex:auditoriums.
Destructive interference is when two or more waves run into each other and are on opposite sides of the medium, ex: noise-canceling headphones.
Describe how both constructive and destructive interference work and give an example of each.
500
A red shift has increasing wavelengths while blue shifts have decreasing wavelengths