Energy Systems Quiz!
Energy Systems
1. What is the difference between energy and power?
A) Power is energy stored; energy is power over time. B) Power is energy per unit of time; energy is the capacity to do work. C) Power is the ability to do work; energy is the rate at which power is used. D) Energy and power are the same thing.
2. Which renewable energy source currently provides the most electricity globally?
A) Wind B) Solar C) Hydropower D) Geothermal
3. What is the most efficient type of power plant in terms of energy conversion?
A) Coal-fired plant B) Nuclear plant C) Combined-cycle natural gas plant D) Solar thermal plant
4. By what percentage has the cost of solar panels dropped since 2010?
A) 30% B) 50% C) 70% D) 90%
5. Which energy storage technology has the highest energy density?
A) Lithium-ion batteries B) Pumped hydro storage C) Hydrogen storage D) Compressed air energy storage
6. What percentage of global greenhouse gas emissions comes from energy production?
A) 10% B) 25% C) 40% D) Over 70%
7. How much energy does the average U.S. household consume annually?
A) 5,000 kWh B) 10,000 kWh C) 15,000 kWh D) 20,000 kWh
8. What is the main challenge of integrating renewable energy into the grid?
A) High costs B) Weather variability C) Limited resources D) Public resistance
9. What country is the largest producer of wind energy?
A) China B) United States C) Germany D) India
10. What was the primary fuel source during the industrial revolution?
A) Wood B) Coal C) Oil D) Natural gas
11. How does geothermal energy produce electricity?
A) By harnessing wind created by volcanic activity B) By using Earth’s internal heat to produce steam C) By capturing sunlight absorbed in hot rocks D) By using tidal forces to generate motion underground
12. What unit is used to measure power?
A) Joules B) Watts C) Kilowatt-hours D) Calories
13. What is the process in which a nucleus splits into smaller parts, releasing energy in a nuclear power plant?
A) Radiation B) Fusion C) Fission D) Decay
14. What percentage of global energy comes from fossil fuels?
A) 30% B) 50% C) 70% D) Over 80%
15. What is the expected lifespan of a typical wind turbine?
A) 10 years B) 20 years C) 30 years D) 50 years