Wave is a periodic (1)______that moves away from a source which carries (2)______ with it. Waves can be typified according to the (3)______ of motion of the vibrating particles with respect to the direction in which the waves travel and according to (4)______. (5)_____ waves vibrate perpendicularly to the direction in which the waves travel. This wave exhibits up and down motion. Longitudinal waves vibrate (6)_______or back and forth to the direction in which the waves travel. (7)______ waves are combination of transverse and longitudinal waves. These move in a circular pattern as the waves pass by. (8)______ waves need solid, liquid and gas medium to propagate or travel. Transverse, mechanical and surface waves are examples of mechanical waves. Electromagnetic waves do not need (9)_______ to propagate. Radio waves, ultraviolet, infrared, and gamma rays are examples of (10)_______ waves. The nature of waves can be described through its terms, quantities and (11)______ The (12)_______ and trough refer to the highest point and lowest point of a wave pattern, respectively. The (13)__________ of a transverse wave is the maximum displacement of a particle of the medium on either side of its normal position when the wave passes. The frequency of periodic waves is the is the distance number of waves that pass a particular point for every one second while the (14)_______between adjacent crests or troughs. 4. The period is the time required for one complete wave to pass a particular point. The (15)________ of the wave refers to the distance the wave travels per unit time. It is related to the frequency of the wave and wavelength through the following equation: wave speed= frequency x wavelength .



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