Master this deck with 60 terms through effective study methods.
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a disturbance that transmits energy through matter or space
A mechanical wave is created when a source of energy causes a ______ to travel through a _______
the material through which a wave travels
T/F: A medium can be a solid, liquid, or gas
________ are classified by how the medium moves in relation to the movement of the wave
Name the 2 types of mechanical waves
a wave in which the medium moves at right angles to the direction in which the wave travels Example: light and heat, a football game, rope
the original position of the medium before the wave passes through
the highest point of the wave (highest energy)
the lowest point of the wave (lowest energy)
the distance from the line of origin to the top of a crest (or the bottom of the trough)
the distance from a crest to crest (or a trough to trough)
How do you determine the wavelength?
a wave in which the medium moves in the same direction as the movement of the wave Example: sound
an area where the particles of the medium are close together
an area where the particles of the medium are far apart
the distance between 2 compression's or 2 rarefaction's
the width of a compression or rarefaction
the number of complete wave cycles that pass a point in a given amount of time
What is frequency measured in?
1 wave = 1 ____ and 1 _____ OR 1 __________ and 1 ___________
the speed of a wave is equal to the wavelength multiplied by the frequency
What is the formula for speed?
What are the units of speed, frequency, and wavelength?
When a wave encounters a _______ or another ______, they exhibit certain properties
when a wave bounces off a hard, flat surface Example: echo (gym), light
the bending of a wave as it moves around an obstacle or through a narrow opening Example: sound bends around corners, ocean waves
T/F: Sound diffracts more than light
the bending of a wave as it enters a new medium at an angle (due to a change in speed) Example: pencil in water
when a wave interacts with another wave
Name the 2 types of interference
when 2 crests or 2 compression meet
when the crest of one wave meets the trough of another, or when a compression meets a rarefaction Example: speakers, swimmers
Sound waves are (transverse/longitudinal)?
What do sound waves need to move?
How is sound produced?
Name the 5 factors affecting the speed of sound
The higher the temperature, the (faster/slower) the speed of sound?
What is the speed of sound?
What is the order of how fast sound can travel through a medium (Liquid, Gas, Solid)
how fast the particles of a substance can move and return to their original position
Most elastic? Solids or gases
Least elastic? Solids or gases
The higher the _____ of the substance, the faster the speed of sound moves through that substance (particles are closer together)
depends on the amplitude and the distance from the sound source
Intensity is also known as the ________ or _________
What is intensity measured in?
What is our threshold for pain? (in decibels)
how high or low a sound is
Pitch depends on _______
Pitch is measured in ______
The higher the frequency, the (higher/lower) pitch?
What device exhibits sound at frequencies above the range of human hearing (bats, dolphins)?
Most people hear frequencies between _______-_____Hz
a change in pitch (frequency) caused by motion of the sound source, listener, or both
As the source of sound approaches, an observer hears a ________ pitch. When the sound source moves away, the observer hears a _____ pitch
when an airplane flies faster than the speed of sound, this creates a large amount of sound energy behind the plane and creates a "boom" after the place passes by
What speed must the plane travel to reach sonic boom?
when one object causes another object to vibrate at it's own natural frequency Example: tuning forks, singer breaks glass
when an object forces another object (that it is connected to) to vibrate. This produces a louder sound Example: tuning fork and hanger with styrofoam