Jupiter and Saturn atmospheres receive a large percentage of heat from interior, while terrestrial planets are heated from exterior. K. Frozen ammonia and organic compounds give the atmospheres color.
Temperatures increase as one goes in.
Uranus and Neptune appear bluish. Methane absorbs red light and scatters blue, and methane is predominant gas in upper atmopshere. Jupiter, Saturn and Neptune display whirling storms and other forms of turbulence. Uranus, because of its lack of strong internal energy source, does not. The huge counterclockwise circulation pattern has been visible since time of Galileo.