Brody and ethel are arguing about waves. brody says that waving his hand back and forth is a scientific wave. ethel says that it is not. which statement best describes who is correct? -brody is correct because the wave involves an input of energy. -ethel is correct because energy is not carried from one place to another. -brody is correct because the pattern repeats. -ethel is correct because the motion has no pattern. khalad is measuring the amplitude of a wave. what can be known about this wave? -it is a sound wave. -it is a transverse wave. -it is an electromagnetic wave. -it is a mechanical wave.