Podcast
Questions and Answers
What type of energy does the earth's core provide?
What type of energy does the earth's core provide?
- Nuclear energy
- Solar energy
- Wind energy
- Geothermal energy (correct)
Which energy source is considered non-renewable?
Which energy source is considered non-renewable?
- Solar energy
- Wind energy
- Biomass energy
- Fossil fuels (correct)
Which process allows plants to utilize solar energy?
Which process allows plants to utilize solar energy?
- Geothermal conversion
- Photosynthesis (correct)
- Fossilization
- Combustion
What percentage of the United States' energy is generated from renewable sources?
What percentage of the United States' energy is generated from renewable sources?
How does tidal energy originate?
How does tidal energy originate?
What is a defining characteristic of renewable energy sources?
What is a defining characteristic of renewable energy sources?
What type of energy is created through the burial and transformation of biomass?
What type of energy is created through the burial and transformation of biomass?
Which country generates more than 99% of its electricity from renewable sources?
Which country generates more than 99% of its electricity from renewable sources?
Which of the following is NOT a characteristic of non-renewable energy sources?
Which of the following is NOT a characteristic of non-renewable energy sources?
Flashcards
Renewable Energy
Renewable Energy
Energy that comes from sources that can be replenished within a human lifespan.
Non-Renewable Energy
Non-Renewable Energy
Energy that comes from sources that cannot be replenished within a human lifespan.
Geothermal Energy
Geothermal Energy
Energy derived from the heat within the Earth's core.
Tidal Energy
Tidal Energy
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Solar Energy
Solar Energy
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Biomass Energy
Biomass Energy
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Fossil Fuels
Fossil Fuels
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Nuclear Energy
Nuclear Energy
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Environmental and Health Costs of Energy
Environmental and Health Costs of Energy
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Study Notes
Energy Sources
- Energy for buildings, manufacturing, and transportation comes from various natural sources.
- Earth's core yields geothermal energy.
- Moon and sun's gravity create tidal energy.
- The sun's radiation creates wind and powers the hydrologic cycle, enabling photosynthesis.
- Photosynthesis converts solar energy into biomass (plants, algae, cyanobacteria).
- Biomass can be burned for biofuels (wood, biodiesel, bioethanol).
- Fossil fuels form from ancient biomass through geological processes (burial, heat, pressure).
Renewable vs. Non-renewable Energy
- Renewable energy sources replenish quickly (human lifespans).
- Examples: solar, wind, biomass.
- Non-renewable energy sources are finite and take a long time to replenish (millions of years).
- Examples: nuclear, fossil fuels.
- All energy sources have environmental and health costs.
- Energy distribution is uneven globally.
Energy Source Examples
- US generates less than 10% of its energy from renewable sources.
- Costa Rica generates over 99% of its electricity from renewables.
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