AP Environmental Science Flashcards: Solar Energy

What this deck covers

This deck focuses on Solar Energy, giving you a quick way to review the definitions, rules, and examples that matter most for AP Environmental Science.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Flashcard 1: What is the term for the devices that convert DC electricity from solar panels to AC?

Answer: Inverters. Essential for connecting solar systems to AC power grids.

Flashcard 2: What is the main environmental impact of manufacturing solar panels?

Answer: Resource and energy consumption. Mining, purification, and manufacturing require significant energy inputs.

Flashcard 3: Identify the two main types of solar energy technologies.

Answer: Photovoltaic (PV) and solar thermal. PV generates electricity directly; thermal uses heat for energy.

Flashcard 4: Identify the primary renewable source used in solar energy systems.

Answer: Sunlight. Inexhaustible energy source from the Sun's nuclear fusion.

Flashcard 5: State the formula for determining the energy output of a solar panel.

Answer: Energy = Power × Time. Total electrical energy produced over a specific time period.

Flashcard 6: Name a factor that influences the solar insolation at a location.

Answer: Latitude. Distance from equator affects angle and intensity of solar radiation.

Flashcard 7: What is the primary purpose of anti-reflective coatings on solar panels?

Answer: Increase light absorption. Reduces reflection losses to improve photon absorption efficiency.

Flashcard 8: What is the term for the total amount of solar energy received per day?

Answer: Solar insolation. Daily total solar energy received, measured in kWh/m²/day.

Flashcard 9: Name one application of solar thermal energy.

Answer: Water heating. Solar collectors absorb sunlight to heat water directly.

Flashcard 10: State the formula for solar power calculation using irradiance and area.

Answer: Power = Irradiance × Area. Direct relationship between solar intensity, panel size, and output.

Flashcard 11: State the formula for calculating solar panel efficiency.

Answer: Efficiency = $\frac{\text{Output Power}}{\text{Input Power}} \times 100$. Percentage of solar energy converted to electrical energy.

Flashcard 12: What is the main function of a solar inverter?

Answer: Converts DC to AC electricity. Converts direct current from panels to alternating current for use.

Flashcard 13: What is the unit of measurement for solar energy received per unit area?

Answer: Watts per square meter (W/m²). Standard unit for measuring solar energy intensity or irradiance.

Flashcard 14: Define the term 'solar constant'.

Answer: Average solar power per unit area at Earth's surface. Approximately 1,361 W/m² at the top of Earth's atmosphere.

Flashcard 15: What is the typical payback period for a residential solar system?

Answer: 5 to 10 years. Time required for energy savings to offset initial installation costs.

Flashcard 16: What is the expected annual degradation rate for most solar panels?

Answer: 0.5% to 1%. Gradual efficiency decline due to material aging and wear.

Flashcard 17: Name a common use of solar energy in transportation.

Answer: Solar-powered vehicles. Electric cars and buses powered by photovoltaic energy systems.

Flashcard 18: Name the process by which solar panels convert sunlight into electricity.

Answer: Photovoltaic effect. Photons excite electrons in semiconductor materials to create current.

Flashcard 19: What is the phenomenon that causes solar cells to degrade over time?

Answer: Light-induced degradation. Gradual efficiency loss due to UV exposure and thermal cycling.

Flashcard 20: Identify a type of solar cell that uses organic materials.

Answer: Organic photovoltaic cells. Carbon-based semiconductors offer potential for flexible, low-cost panels.

Flashcard 21: What is the role of a charge controller in a solar energy system?

Answer: Regulates battery charging. Prevents battery overcharging and manages power flow in systems.

Flashcard 22: What is the main advantage of distributed solar power systems?

Answer: Reduced transmission losses. Local generation minimizes energy lost during long-distance transmission.

Flashcard 23: What type of solar system uses mirrors to concentrate sunlight?

Answer: Concentrated Solar Power (CSP). Focuses scattered sunlight using reflective surfaces for thermal power.

Flashcard 24: Which chemical element is most commonly used in photovoltaic cells?

Answer: Silicon. Most abundant semiconductor element used in crystalline solar cells.

Flashcard 25: What is the ideal orientation for solar panels in the Northern Hemisphere?

Answer: South-facing. Maximizes solar exposure in northern latitudes throughout the year.

Flashcard 26: What is the typical efficiency range for commercial solar panels?

Answer: 15% to 20%. Modern silicon panels convert this fraction of sunlight to electricity.

Flashcard 27: What does CSP stand for in solar technology?

Answer: Concentrated Solar Power. Uses mirrors or lenses to focus sunlight for thermal energy.

Flashcard 28: Identify one method of storing solar energy for later use.

Answer: Battery storage. Stores excess energy for use when sunlight is unavailable.

Flashcard 29: Identify one factor that can reduce solar panel performance.

Answer: Shading. Blocks sunlight from reaching cells, dramatically reducing power output.

Flashcard 30: Identify the key environmental benefit of solar energy.

Answer: Reduces greenhouse gas emissions. Clean energy source that produces no carbon dioxide during operation.