The maximum negative displacement of a wave is the same as its amplitude.
As a wave travels through space, its particles are sometimes above the
<em>x</em>-axis (+) and sometimes below it (-).
The maximum displacement from the axis is the <em>amplitude</em> of the wave.
The amplitude of the wave is the <em>same in both the positive and negative directions</em>.
<span>Inside the nucleus of an atom are protons and electrons. </span>
The motion of molecules in a ice cube are so packed together that they can't move freely like molecules in liquids and gases
