Activity: Fill me in: Complete the sentence by putting the right word or words on the blank.

1_____are classified according to the direction of motion of the particles of the medium. The three types of mechanical waves are 2._____ 3._____ and 4._____The 5._____waves in which the motion of the medium is at right angles to the direction of the wave. It has four parts the crest, trough, wavelength and amplitude. The crest is the top most part of the transverse wave while the 5._____ lowest part of the transverse wave. The 6._____ is the distance of one complete cycle and the amplitude the greatest distance from crest of a wave. The 7._____are waves in which the matter in the medium moves back and fourth in the same direction as the wave travelling. It consists of compression and rarefaction. The 8._____is the part of longitudinal wave where the particles are closer together while 9._____ is the part of longitudinal wave where the particles are spread apart. The 10._____ occur at the surface between two different mediums. The combinations produces a wave in which each particle moves in a circle.​