An "Energy Layer" refers to a specific region in a system where energy is stored or transferred. This concept is often used in fields like physics and engineering to describe how energy moves through different materials or environments. For example, in a battery, the energy layer can represent the area where chemical energy is converted into electrical energy. In the context of atmospheric science, energy layers can describe different levels of the atmosphere where heat and energy are distributed. These layers influence weather patterns and climate, as they determine how energy from the sun interacts with the Earth's surface and atmosphere.