Final MC Flashcards
Energy transferred as heat always moves from an object…
at high temperature to an object at low temperature
A crest is ..
an upward displacement in a transverse wave
What types of waves require a medium in order to travel?
Mechanincal
A wave that is turned back when it meets the boundary of the medium in which it is travelling is said to have undergone A. refraction B. reflection C. diffraction D. interference
B. reflection
The spreading of a wave disturbance beyond the edge of a barrier is A. refraction B. reflection C. diffraction D. interference
C. Diffraction
The law of reflection is expressed by
i = r
Reciprocals
Period of a wave and its frequency
refraction
The bending of the path of a wave disturbance as it passes from one medium into another in which there is a different speed
An object inside the focal point of a concave mirror will produce what type of image A. smaller, real, inverted B. Smaller, real, upright C. Larger, real, inverted D. Larger, virtual, upright
D. Larger, virtual, upright
Sound waves travel faster in … than air
D. More dense matter
Mechanical Waves Requirements
Require material medium
water, sound, spring
Electromagnetic Waves Requirements
No Medium required
light, radio, x-rays
Transverse Waves
the particles of the medium vibrate perpendicularly to the direction of motion to the wave
(Water, Light)
Longitudinal
particles of the medium vibrate parallel to the direction of the wave (Sound)
wave pulse
single disturbance, returns to rest after passing
Traveling wave
regular repeating vibration
Crest
uppermost part of the wave, its highest point
Trough
the lowest part on a wave
Amplitude
The peak value of a wave (positive or negative) Distance from the undisturbed level to the trough or crest
Wavelength
distance between a vibrating particle and the nearest one to it in the same place
There is also distance between two troughs of crests
Frequency
number of complete vibrations per second measure in a fixed location
Period
How long it takes one complete wave to pass a fixed location
Refraction
change in direction of waves at the boundary between two different media
Diffraction
the spreading of waves around the edge of a barrier
