The frontal lobe is the part of the brain that controls important cognitive skills in humans, such as emotional expression, problem solving, memory, language, judgment, and sexual behavior. It is, in essence, the âcontrol panelâ of our personality and our ability to communicate.
In order for the power grid to function, demand for energy must exactly match supply. Power demand is relatively predictable and conventional power plans, like nuclear plants and natural gas, can adjust output accordingly. Solar and wind power, however, cannot easily adjust output. They also provide power unpredictably relative to conventional power sources.
solar energy definition. The energy the Earth receives from the sun, primarily as visible light and other forms of electromagnetic radiation. (See renewable resource.) Note: The term solar energy often refers to processes that use this energy to generate heat or electricity for human use. (See solar cells.)