PS Unit 3B: Waves (6 days)

Essential Questions:
How are waves important?
Are there different kinds of waves? 

Mechanical wave: is a vibration that transfers energy through a medium

Medium: substance  (solid, liquid, or gas) through which mechanical waves travel

Seismic wave: are waves of energy caused by the sudden breaking of rock within the earth or an explosion

P  waves: primary waves are the first waves given off by earthquake, p waves are compressional waves

S waves: secondary waves are the second waves given off by the earthquake, s waves are transverse waves

Longitudinal wave/compressional wave: a wave in which the vibration of the medium is parallel to the direction the wave travels

Transverse wave: a waves that causes a medium to travel at right angles to the direction in which the wave travels

Wavelength: is the distance between two consecutive crests or troughs or the distance between two compressions or rarefactions on a wave

Frequency: is the number of waves that pass a point in a certain period of time

Electromagnetic wave: transverse wave that is partly electric and partly magnetic; an electromagnetic wave moves through space without a medium at the speed of light

Electromagnetic spectrum: is the range of electromagnetic waves


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  Jun 14, 2012, 4:30 PM Emilie Siverling