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