Answer:
7.Lamda
Wavelength is usually denoted by the Greek letter lambda (λ); it is equal to the speed (v) of a wave train in a medium divided by its frequency (f): λ = v/f.
8.Slinky
Which letter(s) represent the trough of the wave? The image above shows a student using a Slinky to create a wave. The slinky is stretched at one end and the resulting wave travels back and forth.
9.Wavelength
At any given moment in time, a particle on the medium could be above or below the rest position. Points A, E and H on the diagram represent the crests of this wave. The crest of a wave is the point on the medium that exhibits the maximum amount of positive or upward displacement from the rest position
10.Metres
Amplitude is measured in metres ( ). The greater the amplitude of a wave then the more energy it is carrying. The wavelength, , of a wave is the distance from any point on one wave to the same point on the next wave along. (The symbol is a Greek letter, 'lambda'.)
Explanation:
Hope it helps<3
