Question

Differentiate between stationary and progressive wave

Answer 1

Hope this help
Progressive waves transfer or carry 'energy.

A stationary wave may be produced when two waves having the same frequency and amplitude but traveling in opposite directions superimpose in a medium. For example, stationary waves are set up when we have two waves having the same frequency and amplitude traveling in opposite directions on a stretched string fixed at two ends a distance L apart (a typical laboratory experiment), provided a certain condition is fulfilled between L and the wavelength λ, 
L = n (λ/2) where n = 1,2,3, etc
This results in nodes (points of theoretically zero amplitude) and antinodes (points of maximum amplitude) being set up in the string. Energy in sections of the string between adjacent nodes remains trapped between these nodes and does not propagate. Hence the term “stationary” waves.