UNDERSTANDING OUR PLANET Q/A #3 – What would Earth be like without solar heating? – The life is impossible to find. There will be no existence of life in this world since all of the processes of living creatures need solar heat for their “fuel”. Plant produces food storage in their body tissues by photosynthesis which needs radiation from sunlight. On the other hand, solar heating also influence physical processes in the Earth. The Earth would probably not be fit for life. Hydrological cycle needs Sun radiation as trigger. Radiation heats the atmosphere. Therefore, unequal condition of atmospheric pressure will occur. This will move the air. From this point, weather will be influenced. Without the Sun, Earth would be an icy rock in space.