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Chris mccain Wayne biddy SOLAR ENERGY AND PASSIVE SOLAR HEATING • The sun is a medium sized star that radiates energy from nuclear fusion reactions in its core. • The small fraction of energy from the sun is enough power the wind, plant growth, and the water cycle. • All the renewable energy comes directly or indirectly from the sun. • We use direct solar energy everyday. • When the sun shines in your window and heats up your room by solar power. • Passive solar heating uses the sun energy to heat something directly. • The south facing windows receives the most solar energy, so passive solar building have large windows that face the south. • Passive solar buildings must be well insulated win thick walls and floors in order to prevent heat loss • In the summer the sun’s path is high in the sky ant the overhang of the roof shades the building and keep it cool • In the winter she sun’s path is lower in the sky and the sunshine in your house which warms it • A average house hold can reduce energy bills by using passive solar energy