Chapter 15

28 terms by Tmillhouse 

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Medium

A physical environment in which phenomena occur

Mechanical Wave

A wave that requires a medium through which to travel

Electromagnetic Wave

A wave that consists of oscillating electric and magnetic fields, which radiate outward at the speed of light

Sphere

A three-dimensional surface whose points are equally distant from the center; a globe

Transverse Wave

A wave in which the particles of the medium move perpendicularly to the direction the wave is traveling

Longitudinal Wave

A wave in which particles of the medium vibrate parallel to the direction of wave motion

Crest

The highest point of a wave

Trough

The lowest point of a wave

Amplitude

The maximum distance that the particles of a wave's medium vibrate from their rest position

Wavelength

The Distance from any point on a wave to an identical point on the next wave

Period

In physics, the time that it takes a complete cycle or wave oscillation to occur

Frequency

The number of cycles or vibrations per unit of time; also the number of waves produced in a given amount of time

Doppler effect

An observed change in the frequency of a wave when the source or observer is moving

Reflection

The bouncing back of a ray of light,sound or heat when the ray hits a surface that it does not go through

Diffraction

Bending of wave as it passes through an opening

Refraction

The bending of light as it passes through a medium

Interference

the combination of two or more waves that results in a single wave

Constructive Interference

A superposition of two or more waves that produces an intensity equal to the sum of the intensities of the individual waves

Standing Wave

A pattern of vibration that simulates a wave that is standing still

Destructive Interference

A superposition of two or more waves that produces an intensity equal to the difference of the intensities of the individual waves

Vibration

Wiggle in time, No net movement

Wave

Wiggle in time and space, Net movement of wave, Created by vibration

Surface wave

Only appear on surface of 2 medians, particles move parallel and perpendicular to wave direction

Origin Line

Line of equilibrium

Fixed

Reflection is inverted

Free

Reflection is identical

Node

Point of Destructive interference

Antinode

Point of Constructive interference

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