WAVES REVIEW WHAT IS A WAVE A wave

WAVES REVIEW

WHAT IS A WAVE? A wave is a disturbance that transfers energy from place to place Waves travel through material called a medium Waves are created when a source of energy causes a medium to vibrate A vibration is a repeated back-and-forth or up-and –down motion

WAVE CLASSIFICATION Mechanical waves Waves that require a medium to travel through Electromagnetic waves Waves the DON’T require a medium to travel through

WAVE CLASSIFICATION CONT’D. Transverse the particles of the medium move perpendicular in the direction of the wave Longitudinal the particles of the medium move perpendicular in the direction of the wave Surface combination of transverse and longitudinal waves

WAVE CLASSIFICATION CONT’D.

WAVE PROPERTIES Amplitude the maximum distance a wave varies from its rest position Frequency The number of wavelengths that pass a point each second Wavelength The distance from a point on a wave to the corresponding point on the next cycle of the wave

WAVE CALCULATIONS

TYPES OF WAVES Electromagnetic Sound Seismic Water

REFLECTION, REFRACTION, DIFFRACTION Reflection The bouncing back of a wave when it meets a surface or boundary Refraction The bending of a wave as it passes from one medium to another Diffraction The bending of a wave as it passes through an opening or by an edge

REFLECTION, REFRACTION, DIFFRACTION

WAVE INTERFERENCE

ELECTROMAGNETIC SPECTRUM

SOUND WAVES Longitudinal Waves Higher frequency = higher pitch Higher amplitude = higher loudness