Podcast
Questions and Answers
Which energy source is primarily generated through a process involving heat and pressure over millions of years?
Which energy source is primarily generated through a process involving heat and pressure over millions of years?
- Solar energy
- Geothermal energy
- Fossil fuels (correct)
- Wind energy
Which of the following sources is considered renewable?
Which of the following sources is considered renewable?
- Fossil fuels
- Biodiesel (correct)
- Natural gas
- Nuclear energy
What is the main role of solar energy in the water cycle?
What is the main role of solar energy in the water cycle?
- Creating biomass
- Powering hydroelectric dams
- Evaporating water (correct)
- Generating fossil fuels
Which country generates more than 99% of its electricity from renewable sources?
Which country generates more than 99% of its electricity from renewable sources?
What is a primary environmental cost associated with all energy sources?
What is a primary environmental cost associated with all energy sources?
Which energy source uses the gravitational pull of the moon and sun?
Which energy source uses the gravitational pull of the moon and sun?
How is biomass converted into renewable energy?
How is biomass converted into renewable energy?
Which of the following is a characteristic of non-renewable energy sources?
Which of the following is a characteristic of non-renewable energy sources?
What percentage of energy in the United States comes from renewable sources?
What percentage of energy in the United States comes from renewable sources?
Flashcards
Renewable Energy
Renewable Energy
Energy sources that can be replenished at a rate faster than they are consumed. Examples include solar, wind, and biomass energy.
Non-Renewable Energy
Non-Renewable Energy
Energy sources that are finite and take millions of years to form. Examples include fossil fuels like oil, gas, and coal, and nuclear energy.
Geothermal Energy
Geothermal Energy
Energy derived from the heat within the Earth's core. Used for heating and electricity generation.
Tidal Energy
Tidal Energy
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Solar Energy
Solar Energy
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Wind Energy
Wind Energy
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Biomass Energy
Biomass Energy
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Nuclear Energy
Nuclear Energy
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Fossil Fuels
Fossil Fuels
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Study Notes
Energy Sources
- Energy for modern life comes from various natural sources.
- Geothermal energy originates from Earth's core.
- Tides are generated by the gravitational pull of the sun and moon.
- The sun's electromagnetic radiation drives wind and the water cycle, and photosynthesis.
- Plants, algae, and cyanobacteria convert solar energy into biomass, used for biofuels (e.g., wood, biodiesel, bioethanol).
- Fossil fuels (e.g., coal, oil, natural gas) result from the transformation of ancient biomass over millions of years.
Renewable vs. Non-Renewable Energy
- Energy sources are categorized as renewable or non-renewable.
- Renewable sources regenerate quickly enough for human consumption (e.g., solar, wind, biomass).
- Non-renewable sources are finite and take a very long time to regenerate (e.g., fossil fuels, nuclear).
Environmental and Health Costs
- All energy sources have environmental and health impacts.
- Energy distribution is uneven across nations.
US and Costa Rica Energy Comparison
- The U.S. generates less than 10% of its energy from renewable sources.
- Costa Rica generates over 99% of its electricity from renewables.
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