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What is geothermal energy?

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Geothermal energy is the heat that comes from the sub-surface of the earth. It can be found in the hot water and steam that are trapped beneath the earth's surface and is used for heating homes and generating electricity.

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How is the efficiency of a generator calculated?

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Efficiency is calculated using the formula: Efficiency (%) = (Output Power / Input Power) x 100. For example, if a generator produces 200 V and 3.0 A, the output power is 600 W. If the input power is 2400 W, the efficiency is (600/2400) x 100 = 25%.

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What is passive solar design?

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Passive solar design refers to the use of building materials and design techniques that naturally collect, store, and distribute solar energy for heating and cooling without mechanical systems. Examples include solar ovens and green roofs.

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What unit is energy measured in?

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Energy is measured in Joules (J).

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What is nuclear fission?

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Nuclear fission is the process in which a large nucleus splits into two smaller nuclei, releasing energy, neutrons, and gamma radiation.

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What is the primary source of solar energy?

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The primary source of solar energy is the sun, which emits energy in the form of sunlight that can be harnessed for various applications.

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What is the difference between active and passive solar energy systems?

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Active solar energy systems use mechanical devices to collect and convert solar energy (e.g., solar panels), while passive systems rely on building design and materials to naturally collect and utilize solar energy.

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What is the role of biofuels in energy resources?

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Biofuels are renewable energy sources made from organic materials (biomass) that can be used for heating, electricity generation, and as transportation fuels.

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What is hydroelectric energy?

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Hydroelectric energy is generated by using the flow of water to turn turbines, which then produce electricity. It is a renewable energy source.

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What is the significance of energy efficiency?

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Energy efficiency refers to using less energy to provide the same service or output. It is important for reducing energy consumption, lowering costs, and minimizing environmental impact.