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Praxis 5442: Nature of science and
Engineering - Impact of Science Questions and Answers Latest Version 100% Pass
What is the primary source of energy for most renewable energy systems on Earth?✔✔The Sun
How does a wind turbine generate electricity?✔✔By converting the kinetic energy of wind into mechanical energy and then into electrical energy
What form of energy is stored in fossil fuels?✔✔Chemical energy
Why are fossil fuels considered nonrenewable resources?✔✔Because they take millions of years to form and are depleted faster than they are replenished
What is the main environmental concern associated with burning fossil fuels? 1 / 3
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✔✔The release of greenhouse gases that contribute to climate change
How does solar energy differ from fossil fuel energy in terms of pollution?✔✔Solar energy produces no air pollution during operation
What is one major advantage of geothermal energy?✔✔It provides a constant and reliable source of power
Why is hydropower considered a renewable resource?✔✔Because it uses the natural water cycle, which is continuously replenished
What is biomass energy derived from?✔✔Organic materials like plants, wood, and agricultural waste
How is electricity generated in a coal power plant?✔✔By burning coal to heat water, creating steam that spins a turbine
What energy transformation occurs in a solar panel? 2 / 3
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✔✔Light energy is transformed into electrical energy
What is one disadvantage of solar power?✔✔It depends on sunlight and may not be effective during cloudy days or at night
Why is wind power considered clean energy?✔✔Because it produces no direct emissions or pollutants
What makes natural gas a cleaner fossil fuel compared to coal?✔✔It releases fewer pollutants and carbon dioxide when burned
How does a hydroelectric dam produce electricity?✔✔By using falling or flowing water to spin turbines connected to generators
What is the term for energy that comes from the heat within the Earth?✔✔Geothermal energy
Why is nuclear energy sometimes considered an alternative to fossil fuels?
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