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What’s the What’s the deal with deal with
WAVE WAVE classification?classification?
Mr. Blizzard, 8Mr. Blizzard, 8thth Grade Science Grade Science
Tanglewood Middle SchoolTanglewood Middle School
How are How are WAVES WAVES classifieclassifie
d?d?
What’s the deal with WAVE What’s the deal with WAVE classification?classification?
WavesWaves can be can be classifiedclassified by by WHATWHAT
they they movemove throughthrough or or by by HOWHOW energyenergy
movesmoves throughthrough them. them.
red wordsred words= vocabulary, = vocabulary, blue wordsblue words= connect = connect wordswords
ClassificatiClassification of on of
WAVES WAVES by by WHATWHAT they they
move move
throughthrough
What’s the deal with WAVE What’s the deal with WAVE classification?classification?
There are twoThere are two classifications classifications for for waveswaves
based on what they based on what they move move throughthrough: :
• Mechanical WavesMechanical Waves•Electromagnetic WavesElectromagnetic Waves
red wordsred words= vocabulary, = vocabulary, blue wordsblue words= connect words= connect words
What are What are mechanicmechanic
al al WAVESWAVES??
What’s the deal with WAVE What’s the deal with WAVE classification?classification?
Mechanical wavesMechanical waves are are waveswaves that can that can
ONLYONLY move move throughthrough a a mediummedium (through (through mattermatter).).
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What’s the deal with WAVE What’s the deal with WAVE classification?classification?
Mechanical wavesMechanical waves requirerequire the the particlesparticles of of the the mediummedium to to vibratevibrate in order for in order for energyenergy to to
be be transferredtransferred..
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What are What are examples examples
mechanical mechanical WAVESWAVES??
What’s the deal with WAVE What’s the deal with WAVE classification?classification?
• water waveswater waves•earthquake/seismic wavesearthquake/seismic waves
• sound wavessound waves•waves that travel down a waves that travel down a
rope or springrope or spring
All of these All of these examplesexamples CANNOTCANNOT move through move through empty spaceempty space..
What isWhat is EMPTY EMPTY SPACESPACE??
What’s the deal with WAVE What’s the deal with WAVE classification?classification?
Empty spaceEmpty space is is space in which space in which NO NO
MATTERMATTER is present. is present. Another name for Another name for this is this is a vacuuma vacuum..
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What areWhat are electromagnelectromagn
etic etic
WAVESWAVES??
What’s the deal with WAVE What’s the deal with WAVE classification?classification?
Electromagnetic wavesElectromagnetic waves are are waveswaves that can that can
travel through travel through mattermatter or or empty spaceempty space where where mattermatter is is not presentnot present..
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What are What are examples of examples of
electromagneelectromagnetic WAVEStic WAVES??
What’s the deal with WAVE What’s the deal with WAVE classification?classification?
• radio wavesradio waves• microwavesmicrowaves
• infrared wavesinfrared waves• visible lightvisible light
• ultraviolet raysultraviolet rays• X-raysX-rays
ClassificatioClassification of n of WAVES WAVES
by by HOWHOW energy energy moves moves
through through
themthem
What’s the deal with WAVE What’s the deal with WAVE classification?classification?
There are twoThere are two classifications classifications for for waveswaves based on how based on how
energy energy moves through moves through them: them: •Compressional/Longitudinal Compressional/Longitudinal
WavesWaves• Transverse WavesTransverse Waves
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What are What are compressionacompressional/ longitudinal l/ longitudinal
WAVESWAVES??
What’s the deal with WAVE What’s the deal with WAVE classification?classification?
Mechanical wavesMechanical waves in which the in which the particlesparticles of of mattermatter in the in the
mediummedium vibratevibrate by by pushing pushing togethertogether and and moving apartmoving apart
parallelparallel to the to the directiondirection in which in which the wave travelsthe wave travels are called are called compressional/longitudinal compressional/longitudinal
waveswaves..
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http://www.lcse.umn.edu/specs/labs/glossary_items/rarefaction_spring.htmlhttp://www.lcse.umn.edu/specs/labs/glossary_items/rarefaction_spring.html
What’s the deal with WAVE What’s the deal with WAVE classification?classification?
The place on the The place on the wavewave that is that is pushed togetherpushed together
is called the is called the compression compression and the and the place that is place that is moving moving
apartapart is the is the rarefactionrarefaction..
red wordsred words= vocabulary, = vocabulary, blue wordsblue words= connect words= connect words
What are What are examples of examples of
compressionalcompressional/ longitudinal / longitudinal
waveswaves??
What’s the deal with WAVE What’s the deal with WAVE classification?classification?
• sound wavessound waves•some waves in a springsome waves in a spring
•some seismic waves some seismic waves (earthquake waves- (earthquake waves- primary waves, to be primary waves, to be
exact)exact)
What are What are transverstransvers
e e WAVESWAVES??
What’s the deal with WAVE What’s the deal with WAVE classification?classification?
Mechanical wavesMechanical waves in which the in which the particlesparticles of of mattermatter in the in the
mediummedium vibratevibrate by moving by moving back and forthback and forth and and
perpendicularperpendicular ( (at right anglesat right angles) ) to the to the direction the wave direction the wave
travelstravels are called are called transverse transverse waveswaves..
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science.hq.nasa.gov/kids/imagers/ems/waves3.html science.hq.nasa.gov/kids/imagers/ems/waves3.html
What’s the deal with WAVE What’s the deal with WAVE classification?classification?
The The highest pointhighest point of of a a transverse wavetransverse wave is the is the crestcrest and the and the
lowest pointlowest point is is called a called a troughtrough..
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What are What are examples of examples of transverse transverse
waveswaves??
What’s the deal with WAVE What’s the deal with WAVE classification?classification?
• strings on a musical strings on a musical instrumentinstrument
• waves on a ropewaves on a rope• some waves in a springsome waves in a spring
• some seismic waves some seismic waves (earthquake waves- (earthquake waves-
secondary waves, to be exact)secondary waves, to be exact)
What’s the deal with WAVE What’s the deal with WAVE classification?classification?
Electromagnetic wavesElectromagnetic waves are are transverse wavestransverse waves
that can travel that can travel without a without a mediummedium
through through empty spaceempty space..
red wordsred words= vocabulary, = vocabulary, blue wordsblue words= connect words= connect words
Works CitedWorks Cited• Information from the South Carolina Information from the South Carolina
State Science Standards for 8State Science Standards for 8thth Grade Grade• Microsoft Clipart (the background Microsoft Clipart (the background
picture) picture) • http://www.lcse.umn.edu/specs/http://www.lcse.umn.edu/specs/
labs/glossary_items/labs/glossary_items/rarefaction_spring.htmlrarefaction_spring.html
• science.hq.nasa.gov/kids/imagers/science.hq.nasa.gov/kids/imagers/ems/waves3.htmlems/waves3.html
