Jupiter's stripy appearance

Answer 1

Jupiter appears to have stripes due to to cloud bands on its gaseous surface. The cloud bands are seen to be dark and light due to a process called convection. In this process, the cloud bands rise when they are warm because hot air rises. When they rise, they are lighter in color. As they cool, they begin to sink and become darker in color. Once they have sunk and are closer to Jupiter's internal heat source, they heat up and rise again and the cycle continues.

This process is very similar to other convection processes, such as boiling water.