Question

describe the two crests​

Answer 1

Explanation:

8.3 Crests and troughs (ESACM) Waves have moving crests (or peaks) and troughs. A crest is the highest point the medium rises to and a trough is the lowest point the medium sinks to. Crests and troughs on a transverse wave are shown in Figure 8.2. Figure 8.2: Crests and troughs in a transverse wave.

Answer 2

A showy growth ( as of flesh or feathers ) on the head of an animal