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Arvind Upadhya 526 3/14/18 Period 5 Waves Mind Map (Behavior of Waves…
Arvind Upadhya 526 3/14/18 Period 5 Waves Mind Map
Properties of Mechanical Waves
Any motion that repeats at regular time intervals is called periodic motion.
A wave's frequency equals the frequency of the vibrating source producing the wave.
Wavelength distance between a point on one wave and the same point on the next cycle of the wave.
More energy the greater its amplitude.
Behavior of Waves
Reflection
Occurs when a wave bounces off a surface that it cannot pass through.
Does not change the speed or frequency of a wave, but the wave can be flipped.
Refraction
Refraction is the bending of a wave as it enters a new medium at an angle.
When a wave enters a medium at an angle, refraction occurs because one side of the wave moves more slowly than the other side.
Example is ocean waves.
Diffraction
Bending of a wave as it moves around an obstacle or passes through a narrow opening.
A wave diffracts more of its wavelength is large compared to the size of an opening or obstacle.
Interference
Constructive Interference
Destructive Interference
Standing Waves
A node is a point on a standing wave that has no displacement from the rest position.
A wave that appears to stay in one place it does not seem to move through the medium.
A antinode is a point where a crest or trough occurs midway between two nodes.
A standing waveform only if hair a wavelength or a multiple of half a wavelength fits lenth into the length of a vibrating cord.
Mechanical Waves
Disturbance in matter that carries energy from one place to another. A mechanical wave is created when a source of energy cause s a vibration to travel through a medium.Three main types of mechanical waves are transverse waves, longitudinal waves, and surface waves.
Surface Waves
Surface Wave is a wave that travels along a surface separating two media.
An example is a bobber.
Longitudinal Waves
An area where the particles in a medium are spaced close together is called compression. An area where the particles in a medium spread out is called rarefaction.
A Longitudinal Wave is a wave in which the vibration of the medium is parallel to the direction the wave travels.
An example is the waves in springs.
Transverse Waves
Highest point of a wave is called a crest. The lowest point of a wave before rest is called a trough.
The definition of a Transverse wave is a Wave that causes the medium to vibrate at right angles to the direction in which the wave travels.
An example is shaking crumbs off a picnic blanket.