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Mechanical vs. Electromagnetic Waves

Mechanical vs. Electromagnetic Waves. Mechanical Waves. Waves that require a material medium Examples include water, sound, and waves along a spring or rope These materials carry the energy of the wave. Electromagnetic Waves. Waves that DO NOT require a medium for motion

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Mechanical vs. Electromagnetic Waves

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  1. Mechanical vs. Electromagnetic Waves

  2. Mechanical Waves • Waves that require a material medium • Examples include water, sound, and waves along a spring or rope • These materials carry the energy of the wave

  3. Electromagnetic Waves • Waves that DO NOT require a medium for motion • Examples include light waves, radio waves, and X-rays • All electromagnetic waves travel through space at the speed of light • Since these waves can’t be observed, we study mechanical waves

  4. Electromagnetic Waves

  5. Transverse Waves • Particles of medium vibrate perpendicular to the direction of the motion of the wave • Examples include guitar strings, waves in piano strings

  6. Longitudinal Wave • Particles of medium to move parallel to the direction of the wave • Examples include sound waves, waves through fluids, liquids, gases or plasma

  7. Surface Waves • Mixture of transverse and longitudinal waves • Example: At the surface of the water, particles move parallel and perpendicular to the direction of the wave.

  8. Earthworm Examination • Grab an earthworm from the vermicompost. Study the movement and decide whether an earthworm moves by longitudinal, transverse, or surface waves...

  9. Types of Waves • Using materials around the classroom, set up a demonstration showing a: • Transverse Wave • Longitudinal Wave • Surface Wave

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