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24 maj 2024 · Compare and contrast energy, heat and temperature. Define sun angle, solar declination, day length, and describe their geographical variation through the seasons. Calculate the noon sun angle for any latitude on the solstices and equinoxes.
9 sie 2024 · Learn about the factors which affect energy supply and the global distribution of energy including technology, population, physical and political factors.
Key learning points. The sun, directly or indirectly, is the source of all energy on Earth: plants use energy to grow the food we eat. Non-renewable energy sources are fossil fuels: coal, oil, natural gas, and the elements uranium and plutonium.
10 maj 2024 · Geothermal energy is heat that is generated within Earth. (Geo means “earth,” and thermal means “heat” in Greek.) It is a renewable resource that can be harvested for human use. About 2,900 kilometers (1,800 miles) below Earth’s crust, or surface, is the hottest part of our planet: the core.
Sources of energy are classified as renewable or nonrenewable. Nonrenewable is primarily fossil fuels: oil, coal, and natural gas. More than 80 percent of U.S. energy needs are satisfied by fossil fuel. Renewable energy sources include hydro-electric, solar, and wind power.
24 maj 2024 · The energy absorbed by the surface is radiated from the Earth as terrestrial longwave radiation (L↑). The amount of energy emitted is primarily dependent on the temperature of the surface. The hotter the surface the more radiant energy it will emit.
Heat gained in the tropics is transported poleward by the global circulation of air and warm ocean currents to heat higher latitude regions. Cooler air from the higher latitudes and cold ocean currents push equatorward to cool the lower latitudes.
