Heat transport from sun to earth is accomplished primarily by

when the sun's energy moves through space, it reaches earth's atmosphere and finally the surface. this radiant solar energy warms the atmosphere and becomes heat energy. this heat energy is transferred throughout the planet's systems in three ways: by radiation, conduction, and convection

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.