Review 5: WVS

if a light ray goes in at 43 degrees then what is the reflection angle?

• -43

• 43

• 0.43

• 57

what is a big difference between mechanical and electromagnetic waves?

• one travels through water and the other does not

• electromagnetic involve the vibration of particles

• both move in transverse motion always

• one only transmits energy

what type of interference is shown?

• constructive

• deconstructive

• none

• both

what is an example of resonance? (think of the effects of vibration)

• guitar string is plucked, and vibrated for a few seconds only

• guitar string is plucked, and makes a loud noise

• guitar string is plucked, and vibrates faster

• guitar string is plucked, and causes nearby strings to vibrate

when a note increases, what also increases?

• amplitude

• frequency

• wave

• trough

is a wave has a speed of 15 m/s and the wavelength is doubled then what is the new wavelength?

• 15 m/s

• 7.5 m/s

• 30 m/s

• 60 m/s

what is the result of adding 2 waves together?

• stayed the same

• smaller amplitude

• greater amplitude

• nothing

give an example of the doppler effect

• submarine using sonar to determine speed of objects

• space ships taking off with mechanical engines

• steam boats being powered down a river

• airplanes landing gear deploying

what is this an example of

• reflection

• refraction

• interference

• diffraction

when a fire truck is coming towards you with sirens going then....

• wavelength decreases, frequency increases

• wavelength decreases, frequency decreases

• wavelength increases, frequency increases

• wavelength increases, frequency decreases