Information Systems Technician Second Class (IT2) Advancement Practice Exam 2026 – Your All-in-One Guide to Success!

The height of a wave is determined by how far the medium is displaced from its resting position, which is the amplitude. In a transverse wave, the crest reaches the maximum positive displacement and the trough the maximum negative displacement, so the distance from trough to crest is twice the amplitude. The other properties describe how far apart crests are (wavelength), how often the wave repeats (frequency), or how fast the wave travels (velocity), none of which directly measure the wave’s height.