Because of the waves lengths of the granules on the photosphere we can tell information about different levels in the sun's interior. The chromosphere is not a spherical shell around the sun like most people would think, instead it has small spikes throughout it called spicules which rise and fall. Spicules are about seven hundred kilometers across and about seven thousand kilometers tall and only last for a short period of time. On the chromosphere there is supergranulation Which is unlike the granulation that occurs on the photosphere. Each supergranulation contains hundreds of individual granules.
Sunspots are the size of the earth and they appear in groups on the sun's surface.
They are concentrated portions of the solar magnetic field that poke through the surface. This field slows energy from entering the region. They last about a month or two before disappearing. The sunspot cycle , in which the number of sunspots varies from low to high and then to low again over eleven years, has been known since at least the eighteenth century. These interactions are primarily related to the rotation of the sun.