What’s the deal with WAVE classification? Mr. Blizzard, 8 th Grade Science Tanglewood Middle School.

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Presentation transcript:

What’s the deal with WAVE classification? Mr. Blizzard, 8 th Grade Science Tanglewood Middle School

How are WAVES classified?

What’s the deal with WAVE classification? Waves can be classified by WHAT they move through or by HOW energy moves through them. red words= vocabulary, blue words= connect words

Classification of WAVES by WHAT they move through

What’s the deal with WAVE classification? There are two classifications for waves based on what they move through: Mechanical WavesMechanical Waves Electromagnetic WavesElectromagnetic Waves red words= vocabulary, blue words= connect words

What are mechanical WAVES?

What’s the deal with WAVE classification? Mechanical waves are waves that can ONLY move through a medium (through matter). red words= vocabulary, blue words= connect words

What’s the deal with WAVE classification? Mechanical waves require the particles of the medium to vibrate in order for energy to be transferred. red words= vocabulary, blue words= connect words

What are examples mechanical WAVES?

What’s the deal with WAVE classification? water waveswater waves earthquake/seismic wavesearthquake/seismic waves sound wavessound waves waves that travel down a rope or springwaves that travel down a rope or spring All of these examples CANNOT move through empty space.

What is EMPTY SPACE?

What’s the deal with WAVE classification? Empty space is space in which NO MATTER is present. Another name for this is a vacuum. red words= vocabulary, blue words= connect words

What are electromagnetic WAVES?

What’s the deal with WAVE classification? Electromagnetic waves are waves that can travel through matter or empty space where matter is not present. red words= vocabulary, blue words= connect words

What are examples of electromagnetic WAVES?

What’s the deal with WAVE classification? radio wavesradio waves microwavesmicrowaves infrared wavesinfrared waves visible lightvisible light ultraviolet raysultraviolet rays X-raysX-rays

Classification of WAVES by HOW energy moves through them

What’s the deal with WAVE classification? There are two classifications for waves based on how energy moves through them: Compressional/Longitudinal WavesCompressional/Longitudinal Waves Transverse WavesTransverse Waves red words= vocabulary, blue words= connect words

What are compressional/ longitudinal WAVES?

What’s the deal with WAVE classification? Mechanical waves in which the particles of matter in the medium vibrate by pushing together and moving apart parallel to the direction in which the wave travels are called compressional/longitudinal waves. red words= vocabulary, blue words= connect words

What’s the deal with WAVE classification? The place on the wave that is pushed together is called the compression and the place that is moving apart is the rarefaction. red words= vocabulary, blue words= connect words

What are examples of compressional/ longitudinal waves?

What’s the deal with WAVE classification? sound wavessound waves some waves in a springsome waves in a spring some seismic waves (earthquake waves- primary waves, to be exact)some seismic waves (earthquake waves- primary waves, to be exact)

What are transverse WAVES?

What’s the deal with WAVE classification? Mechanical waves in which the particles of matter in the medium vibrate by moving back and forth and perpendicular (at right angles) to the direction the wave travels are called transverse waves. red words= vocabulary, blue words= connect words

science.hq.nasa.gov/kids/imagers/ems/waves3.html

What’s the deal with WAVE classification? The highest point of a transverse wave is the crest and the lowest point is called a trough. red words= vocabulary, blue words= connect words

What are examples of transverse waves?

What’s the deal with WAVE classification? strings on a musical instrumentstrings on a musical instrument waves on a ropewaves on a rope some waves in a springsome waves in a spring some seismic waves (earthquake waves- secondary waves, to be exact)some seismic waves (earthquake waves- secondary waves, to be exact)

What’s the deal with WAVE classification? Electromagnetic waves are transverse waves that can travel without a medium through empty space. red words= vocabulary, blue words= connect words

Works Cited Information from the South Carolina State Science Standards for 8 th GradeInformation from the South Carolina State Science Standards for 8 th Grade Microsoft Clipart (the background picture)Microsoft Clipart (the background picture) ossary_items/rarefaction_spring.htmlhttp:// ossary_items/rarefaction_spring.html science.hq.nasa.gov/kids/imagers/ems /waves3.htmlscience.hq.nasa.gov/kids/imagers/ems /waves3.html