# Shared Flashcard Set

## Details

Waves
Characteristics of waves
24
Physics
10/10/2013

Term
 A wave is a disturbance that transmits ___________________.
Definition
 A wave is a disturbance that transmits energy.
Term
 Electromagnetic waves move back and forth at right angles to the direction that the wave travels which makes them _______.
Definition
 Electromagnetic waves move back and forth at right angles to the direction that the wave travels which makes them transverse waves.
Term
 The speed of a wave depends on the ________.
Definition
 The speed of a wave depends on the medium.
Term
 Waves that need a medium in which to travel are called ______.
Definition
 Waves that need a medium in which to travel are called mechanical waves.
Term
 Most waves are caused by _____.
Definition
 Most waves are caused by a disturbance or movement.
Term
 For which type of waves do particles in the medium vibrate perpendicular to the direction in which the waves are traveling?
Definition
 For which type of waves do particles in the medium vibrate perpendicular to the direction in which the waves are traveling? transverse waves
Term
 A sound wave is an example of _____.
Definition
 A sound wave is an example of a compressional wave.
Term
 In an ocean wave, the molecules of water
Definition
 In an ocean wave, the molecules of water move up-and-down and back-and-forth making the wave move in circles.
Term
 Half the verticle distance between the crest and trough of a wave is called the _____.
Definition
 Half the verticle distance between the crest and trough of a wave is called the amplitude.
Term
 The number of waves passing a given point per unit of time is called the _____.
Definition
 The number of waves passing a given point per unit of time is called the frequency
Term
 The bending of a wave around an object is _____.
Definition
 The bending of a wave around an object is diffraction.
Term
 The combining of waves as they meet is known as _____.
Definition
 The combining of waves as they meet is known as a constructive interference.
Term
 When waves change speed as they pass from one medium to another is called ______.
Definition
 When waves change speed as they pass from one medium to another is called refraction.
Term
 _____ is measured in hertz.
Definition
 Frequencyis measured in hertz.
Term
 The Greek letter lambda is often used to represent a wave's _____.
Definition
 The Greek letter lambda is often used to represent a wave's wavelength.
Term
 The high point of a transverse wave is _____.
Definition
 The high point of a transverse wave is   the crest.
Term
 The less dense region of a compression wave is called _____.
Definition
 The less dense region of a compression wave is called the rarefraction.
Term
 If a wave has a wavelength of 10 m and a frequency of 10 Hz, what is the wave speed?
Definition
 If a wave has a wavelength of 10 m and a frequency of 10 Hz, what is the wave speed?   100 m/s
Term
 A wave will travel only as long as it has energy to carry.
Definition
 A wave will travel only as long as it has energy to carry. True
Term
 All waves need a medium in order to travel.
Definition
 All waves need a medium in order to travel.   False     Some waves must travel through a substance. The substance is known as the medium, and it can be solid, liquid or gas. Sound waves and seismic waves are like this: they must travel through a medium. It is the medium that vibrates as the waves travel through it.
Term
 Sound waves are _________waves.  They are caused by vibrations in the air. Sound waves can travel through other mediums such as wood or water.
Definition
 Sound waves are compression waves.  They are caused by vibrations in the air. Sound waves can travel through other mediums such as wood or water.
Term
 A surface wave is another type of wave.  Surface wave particles move in circles.  These types of waves occur at the boundary between two different mediums.  The particles move both ___________and parallel.
Definition
 A surface wave is another type of wave.  Surface wave particles move in circles.  These types of waves occur at the boundary between two different mediums.  The particles move both perpendicularly and parallel.
Term
 _____________waves are waves that are both compressional and transverse. As the earth’s crust breaks, it creates vibrations.  This creates seismic waves and these seismic waves can carry energy outward.
Definition
 Seismic waves are waves that are both compressional and transverse. As the earth’s crust breaks, it creates vibrations.  This creates seismic waves and these seismic waves can carry energy outward.
Term
 A wave is a _____________ that carries energy through matter or space.
Definition
 A wave is a disturbance that carries energy through matter or space.
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