Renewable Energy

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What is passive solar energy?

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Passive solar energy refers to the use of building design and materials to naturally collect, store, and distribute solar energy without mechanical systems. An example is a home with clear glass panels that allow sunlight to pass through.

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Why is solar energy considered renewable?

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Solar energy is considered renewable because the sun's energy is abundant and will not run out for billions of years.

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What is a disadvantage of hydroelectric power?

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Disadvantages of hydroelectric power include siltation behind the dam, disruption of fish migration, and environmental impacts from reservoirs.

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What is the environmental impact of renewable energy compared to fossil fuels?

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Renewable energy resources produce less pollution than fossil fuels.

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What is a key benefit of geothermal energy?

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A key benefit of geothermal energy is that it can provide power 24 hours a day.

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Define active solar energy.

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Active solar energy involves the use of mechanical systems, such as pumps and fans, to collect, store, and distribute solar energy.

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What are photovoltaic cells?

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Photovoltaic cells are devices that convert sunlight directly into electricity using the photovoltaic effect.

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What is the role of a parabolic collector in solar energy?

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A parabolic collector is a type of solar thermal collector that uses a parabolic mirror to focus sunlight onto a receiver, converting it into heat.

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What is the significance of renewable energy in combating climate change?

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Renewable energy sources help reduce greenhouse gas emissions, which are a major contributor to climate change.

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What is biomass energy?

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Biomass energy is derived from organic materials, such as plant and animal waste, which can be used to produce heat, electricity, or biofuels.