WAVES

WAVES

1. Def. Rhythmic disturbances that carry energy without carrying matter

   • MECHANICAL WAVES
     • Def. Waves that need matter (medium) to transfer energy.
       • Matter used: Medium.
         • Types of medium: Air; water; particles; strings; solids; liquids; gases
           • TRANSVERSE WAVES
             • Energy causes the matter in the medium to move up and down or back and forth at right angles to the direction the wave travels. Examples: waves in water
               • Parts: Crest, Trough, Wavelength, Amplitude,.
           • COMPRESSIONAL WAVE (LONGITUDINAL)
             • A mechanical wave in which matter in the medium moves forward and backward along the same direction that the wave travels. Example. Sound waves
               • Parts: Compression, Rraefraction, Wavelength,.
   • ELECTROMAGNETIC WAVES
     • Def. They do notneed a medium, but they can go through matter (medium), such as air, water, and glass.
       • Electromagnetic waves are considered transverse waves because they have similar characteristics; therefore, they have the same parts. Examples: radiation, TV & radio waves, X-rays, microwaves, lasers, energy from the sun, visible light
         • Parts: CWavelength,.

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