Lets Get Mechanical
A _______________ is a disturbance involving the transfer of energy from place to place.
Wave
What unit of measure is frequency measured in?
Hertz
This occurs when a wave bounces off a surface that is cannot pass through.
Reflection
What is the formula for frequency?
F= speed/wavelength
Points of maximum amplitude on a standing wave are _______________.
antinodes
What is a medium?
The material through which a wave travels
A wave’s frequency __________ the frequency of the ___________ source producing the waves.
equals; vibrating
This is the bending of a wave as it moves around an obstacle or passes through a narrow opening
Diffraction
What is the formula for speed?
Speed= wavelength x frequency
This depends on both the wave’s amplitude and the distance from the sound source.
Sound intensity
Mechanical waves require ___________to travel through
Matter
What is the distance between a point on one wave and the same point on the next cycle of the wave?
Wavelength
This occurs because one side of the wave moves more slowly than the other side.
Refraction
What is the formula for Wavelength?
Wavelength= speed/frequency
These are points with zero amplitude caused by destructive interference.
Nodes
What are the three main types of waves?
Transverse waves, longitudinal waves, and surface waves
If you assume that waves are traveling at a constant speed, then wavelength is _________________ to frequency.
Inversely proportional
What is it called for the time required for one cycle, a complete motion that returns to its starting?
A period
A waves frequency is 14 hz and its wavelength is 21 m. What is the waves speed?
294 m/s
This is a change in sound frequency caused by motion of the sound source, motion of the listener, or both.
The Doppler Affect
What is an area where the particles in a medium are spread out?
Rarefraction
The amplitude of a wave is the ______________ displacement of the medium from its rest position.
Maximum
This occurs when two or more waves overlap and combine together
Interference
How does a shorter wavelength affect the frequency of a wave?
It has higher frequency because more waves can pass through a given point in the same time span
An ________________ is used in a variety of applications, including sonar and imaging
Ultrasound