Podcast
Questions and Answers
Which environmental concern is most directly associated with the use of hydroelectric power?
Which environmental concern is most directly associated with the use of hydroelectric power?
- Production of radioactive waste requiring long-term storage.
- Obstruction of waterways and habitat destruction due to reservoirs. (correct)
- Depletion of underground thermal energy resources.
- Emission of greenhouse gases into the atmosphere.
Why might sustainable energy sources be used in parallel with fossil fuels?
Why might sustainable energy sources be used in parallel with fossil fuels?
- To increase the overall cost of energy production.
- To deplete fossil fuel reserves more rapidly.
- To extend the lifespan of fossil fuel reserves. (correct)
- To create more pollution than using fossil fuels alone.
What is a primary limitation on the widespread adoption of solar-powered cars?
What is a primary limitation on the widespread adoption of solar-powered cars?
- Solar energy is only available in certain geographical locations.
- The need for large, heavy batteries to store electricity. (correct)
- The technology for photoelectric cells is not yet fully developed.
- The high cost of maintaining solar panels makes it impractical.
Which factor most significantly affects the viability of tidal energy generation in a particular location?
Which factor most significantly affects the viability of tidal energy generation in a particular location?
What is the most effective way to conserve land, according to the information?
What is the most effective way to conserve land, according to the information?
Despite being generally non-polluting, what environmental concern is associated with hydroelectric power generation?
Despite being generally non-polluting, what environmental concern is associated with hydroelectric power generation?
Which of the following energy sources relies on heat from the Earth's interior?
Which of the following energy sources relies on heat from the Earth's interior?
A community is considering building a new power plant. Which of the following is a significant disadvantage of tidal energy compared to fossil fuels?
A community is considering building a new power plant. Which of the following is a significant disadvantage of tidal energy compared to fossil fuels?
Why is consistent rainfall important for generating hydroelectric power?
Why is consistent rainfall important for generating hydroelectric power?
What is a wind farm?
What is a wind farm?
Flashcards
Sustainable Power Sources
Sustainable Power Sources
Renewable energy sources that replenish naturally and are generally less harmful to the environment.
Hydroelectric Power
Hydroelectric Power
Power generated from the energy of moving water, typically by damming a river to create a reservoir.
Tidal Barrage
Tidal Barrage
A dam-like structure used to capture tidal energy by filling at high tide and releasing water at low tide to generate electricity.
Geothermal Energy
Geothermal Energy
Thermal energy stored beneath the Earth's surface, used for heating and electricity generation.
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Solar Energy
Solar Energy
Energy derived from sunlight, collected using solar panels or photoelectric cells.
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Wind Energy
Wind Energy
Energy harnessed from the wind using wind turbines to generate electricity.
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Wind Farms
Wind Farms
Areas containing numerous wind turbines used to generate electricity.
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Reduce, Reuse, Recycle
Reduce, Reuse, Recycle
Reducing the amount of waste generated, finding new uses for items, and processing used materials into new products.
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Recycling
Recycling
The process of making new products from materials that were used in another product. Example: Recycling paper.
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Reusing
Reusing
Using an item more than once, sometimes for a different purpose. Example: Using a glass jar to organize supplies.
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- A catalytic converter is installed in a vehicle's exhaust system to reduce the discharge of polluting gases.
Sustainable Energy Sources
- Sustainable power sources include hydroelectric power, geothermal power, tidal power, wind power, and solar power.
- Sustainable power sources tend to be more expensive than fossil fuels.
- The parallel use of sustainable fuels may allow fossil fuels to last longer.
Hydroelectric Power
- To generate hydroelectric power, a dam is built across a river to make a reservoir.
- Water is allowed to flow from the dam at a controlled rate; the energy is used to generate electricity.
- Hydroelectric power generation is generally considered nonpolluting.
- Reservoirs can flood land, displace animals and people, resulting in habitat destruction.
- Reservoirs may form a barrier to the movement of marine organisms, preventing fish from reaching breeding sites.
- Hydroelectric power is suitable in areas with reasonable rainfall throughout the year to replenish reservoirs.
Tidal Energy
- Tidal energy can be used to generate electricity.
- Tidal energy is generally harnessed by filling a barrage at high tide and letting the water flow out at low tide.
- The equipment required to generate tidal energy is costly and tends to obstruct waterways.
- Generating tidal energy requires a significant difference between high and low water levels.
Geothermal Energy
- Geothermal energy is thermal energy stored deep underground.
- Hot water in hot springs is water from underground sources heated by geothermal energy.
- Geothermal energy is used to generate electricity and to heat homes and schools in some parts of the world.
Solar Energy
- Solar energy, which comes from the sun, can be collected by solar panels.
- Solar panels can be used to heat water or generate electricity in photoelectric cells.
- Photoelectric cells are devices that use light energy to generate electricity.
- Satellites commonly use photoelectric cells as a power source.
- Solar-powered cars are still experimental and are limited by the need for large batteries to store electricity.
Wind Energy
- Wind energy is harnessed by wind turbines.
- Wind turbines are used to generate electricity.
- Large numbers of wind turbines are being built in exposed areas to produce electricity.
- Wind farms can also be built offshore.
Conserving Land
- Improper waste disposal commonly causes land pollution.
- Common methods of waste disposal (landfills and incinerators) can harm the environment.
- Conserving land should involve strategies that reduce the amount of waste for disposal.
- Reducing, reusing, and recycling materials can conserve land.
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