If plates are always in motion, why aren't we always having to redraw maps?

Find the volume of the ellipsoid x^2+y^2+5z^2=36.

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

This chart shows characteristics of three different types of waves. which statement is best supported by the information in the chart? wave x and wave y are mechanical waves, and wave z is an electromagnetic wave. wave x and wave y are electromagnetic waves, and wave z is a mechanical wave. wave x and wave z are electromagnetic waves, and wave y is a mechanical wave. wave x and wave z are mechanical waves, and wave y is an electromagnetic wave.