All flashcards
Flashcard 1: What is the primary energy source for solar power?
Answer: Sunlight. Solar panels convert electromagnetic radiation from the sun.
Flashcard 2: Identify one limitation of solar power.
Answer: Intermittency due to weather and nighttime. Cannot generate power when sun isn't shining.
Flashcard 3: Which energy source is used in photovoltaic cells?
Answer: Solar energy. PV cells directly convert sunlight into electrical current.
Flashcard 4: What is the main environmental risk of nuclear power?
Answer: Nuclear waste disposal. Radioactive waste remains dangerous for thousands of years.
Flashcard 5: Which energy resource is most affected by geographical location?
Answer: Geothermal energy. Requires specific geological conditions and heat sources underground.
Flashcard 6: What is the main benefit of using hydropower?
Answer: Renewable and capable of large-scale energy production. Provides consistent, reliable power with minimal emissions.
Flashcard 7: Which renewable energy is most dependent on weather conditions?
Answer: Solar energy. Cloud cover and storms drastically reduce energy output.
Flashcard 8: What is the energy transformation in a hydroelectric dam?
Answer: Potential energy to kinetic energy to electrical energy. Water flows through turbines converting motion to electricity.
Flashcard 9: Which renewable energy source is derived from ocean tides?
Answer: Tidal energy. Uses gravitational pull of moon and sun on oceans.
Flashcard 10: Identify the primary use of petroleum.
Answer: Fuel for transportation. Refined into gasoline, diesel, and jet fuel for vehicles.
Flashcard 11: What is the main disadvantage of biomass energy?
Answer: It can compete with food production for land. Competes with agriculture for fertile land and resources.
Flashcard 12: Identify one use of geothermal energy.
Answer: Heating buildings. Direct heat application for homes and industrial processes.
Flashcard 13: Which energy resource is considered carbon-neutral?
Answer: Biomass, when sustainably managed. Absorbs CO2 during growth, releasing it when burned.
Flashcard 14: Identify one environmental benefit of wind energy.
Answer: No water consumption during operation. Wind turbines don't require water for cooling or operation.
Flashcard 15: Identify one advantage of nuclear energy.
Answer: Low greenhouse gas emissions during operation. Produces massive energy without carbon dioxide emissions.
Flashcard 16: Which energy resource uses heat from the Earth's interior?
Answer: Geothermal energy. Taps into natural heat stored beneath Earth's surface.
Flashcard 17: What process is used in nuclear reactors to generate energy?
Answer: Nuclear fission. Uranium atoms split releasing tremendous heat for electricity.
Flashcard 18: Which type of coal has the highest energy content?
Answer: Anthracite. Hardest coal type with highest carbon content and heat.
Flashcard 19: Identify one example of a non-renewable energy resource.
Answer: Coal. Formed over millions of years and cannot be replaced quickly.
Flashcard 20: What is a common use for natural gas besides electricity generation?
Answer: Heating. Used for residential and commercial heating systems.
Flashcard 21: Identify one environmental impact of coal mining.
Answer: Land degradation. Strip mining destroys topsoil and natural landscapes.
Flashcard 22: What is the primary use of coal worldwide?
Answer: Electricity generation. Power plants burn coal to generate electricity globally.
Flashcard 23: Which energy resource can result in habitat destruction?
Answer: Hydropower. Dams flood ecosystems and block fish migration routes.
Flashcard 24: What is the estimated time to depletion for coal reserves?
Answer: Approximately 150 years. Based on current consumption rates and known reserves.
Flashcard 25: What is a major advantage of wind energy?
Answer: It produces no direct emissions during operation. Clean generation without air pollutants or greenhouse gases.
Flashcard 26: Identify a major challenge in transitioning to renewable energy.
Answer: Grid integration and storage of intermittent energy. Variable output requires backup systems and storage solutions.
Flashcard 27: Identify one way to reduce energy consumption in homes.
Answer: Use energy-efficient appliances. Reduces electricity demand and utility bills effectively.
Flashcard 28: What is the main component of natural gas?
Answer: Methane. Burns cleanly with fewer emissions than other fossil fuels.
Flashcard 29: What is a renewable energy resource?
Answer: An energy source that is naturally replenished on a human timescale. Unlike fossil fuels which take millions of years to form.
Flashcard 30: What is the major drawback of tidal energy?
Answer: Limited suitable sites. Requires specific coastal geography with significant tidal range.