Unit 3 Waves- Packet #1

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Last updated 3:36 PM on 10/14/26
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21 Terms

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Electromagnetic waves

waves that are created from vibrations of an electric or magnetic field

<p>waves that are created from vibrations of an electric or magnetic field</p>
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Radio wave

an electromagnetic wave with a low frequency and used in long distance communication

<p>an electromagnetic wave with a low frequency and used in long distance communication</p>
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Microwave

an electromagnetic wave with shorter wavelength than a radio wave

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infrared wave

an electromagnetic wave that has a wavelength shorter than a microwave

<p>an electromagnetic wave that has a wavelength shorter than a microwave</p>
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Ultraviolet wave

An electromagnetic wave that has a shorter wavelength than an infrared waves. They are invisible waves that come from the sun.

<p>An electromagnetic wave that has a shorter wavelength than an infrared waves. They are invisible waves that come from the sun.</p>
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X-ray wave

An electromagnetic waves used to used to create images of the inside of your body.

<p>An electromagnetic waves used to used to create images of the inside of your body.</p>
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Gamma Ray wave

An electromagnetic wave with the smallest wavelength and most energy of any of the waves on the E.M. spectrum. They can be very dangerous.

<p>An electromagnetic wave with the smallest wavelength and most energy of any of the waves on the E.M. spectrum. They can be very dangerous.</p>
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Transverse wave

A wave that moves up and down, perpendicular to the direction of the wave, and does not need a medium (S-L-G) to travel. Examples: light rays, water waves, and E.M. waves.

<p>A wave that moves up and down, perpendicular to the direction of the wave, and does not need a medium (S-L-G) to travel. Examples: light rays, water waves, and E.M. waves.</p>
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Mechanical wave

A longitudinal or compressional wave that moves parallel to the energy of the wave and has compressions and rarefactions. They must have a medium (S-L-G) to travel. Example: sound waves

<p>A longitudinal or compressional wave that moves parallel to the energy of the wave and has compressions and rarefactions. They must have a medium (S-L-G) to travel. Example: sound waves</p>
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Medium

A substance (S-L-G solid, liquid, or gas) that can carry a wave from one location to another. Example: water is a medium that carries a waves in the ocean.

<p>A substance (S-L-G solid, liquid, or gas) that can carry a wave from one location to another. Example: water is a medium that carries a waves in the ocean.</p>
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Crest

The highest point (peak) of a wave

<p>The highest point (peak) of a wave</p>
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Trough

The lowest point of a wave

<p>The lowest point of a wave</p>
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Wavelength

The distance between two corresponding parts of a wave; crest to crest or trough to trough.

<p>The distance between two corresponding parts of a wave; crest to crest or trough to trough.</p>
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Frequency

The number of waves that pass a fixed point in 1 second. Unit is hertz (Hz).

<p>The number of waves that pass a fixed point in 1 second. Unit is hertz (Hz).</p>
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Light wave

The part of the E.M. spectrum that is visible to the eye. Includes ROY G BIV

<p>The part of the E.M. spectrum that is visible to the eye. Includes ROY G BIV</p>
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Amplitude

The height of a wave, measured from line of equilibrium to crest, or line of equilibrium to trough.

<p>The height of a wave, measured from line of equilibrium to crest, or line of equilibrium to trough.</p>
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Reflection

A property of a light wave where light bounces away from the surface.

<p>A property of a light wave where light bounces away from the surface.</p>
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Refraction

A property of a light wave where light slows down and bends as it passes from one medium to another.

<p>A property of a light wave where light slows down and bends as it passes from one medium to another.</p>
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Diffraction

A property of a wave when an object causes it to change direction and bend around it.

<p>A property of a wave when an object causes it to change direction and bend around it.</p>
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Absorption

when a wave strikes an object and goes into it

<p>when a wave strikes an object and goes into it</p>
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Constructive interference

occurs when two or more waves combine to produce a wave with a larger displacement

<p>occurs when two or more waves combine to produce a wave with a larger displacement</p>