Energy Resources Flashcards
(30 cards)
How is electricity generated using fossil fuels?
Fossil fuels are burned to heat water, producing steam that turns a turbine connected to a generator.
Why are fossil fuels considered non-renewable?
They take millions of years to form and are being used up faster than they can be replenished.
Name three examples of fossil fuels.
Coal, oil, and natural gas.
How are fossil fuels formed?
From the remains of ancient organisms subjected to heat and pressure over millions of years.
Name five sources of renewable energy.
Solar, wind, hydroelectric, geothermal, and biomass.
What is a major advantage of solar energy?
It is clean and abundant.
What is a disadvantage of wind energy?
It is intermittent and depends on weather conditions.
How does hydroelectric power generate electricity?
By using the force of moving water to turn turbines.
What is geothermal energy?
Energy derived from the Earth’s internal heat.
What is biomass energy?
Energy derived from organic materials like wood or crops.
What effect can a force have on an object’s motion?
It can change its speed, direction, or cause it to start or stop moving.
What is the SI unit for measuring force?
Newton (N).
Name an instrument used to measure forces.
Newton meter or spring balance.
What do arrows represent in diagrams illustrating forces?
The direction and magnitude of the force.
How do you calculate the energy transferred by a force?
Energy transferred = Force x Distance (E = Fd).
What is the unit for measuring energy transferred?
Joule (J).
What is the difference between renewable and non-renewable energy sources?
Renewable sources can be replenished naturally, while non-renewable sources are finite.
Why is it important to use renewable energy sources?
To reduce pollution and conserve finite resources.
What are some environmental impacts of burning fossil fuels?
Air pollution, greenhouse gas emissions, and climate change.
How does the burning of fossil fuels contribute to global warming?
It releases carbon dioxide, a greenhouse gas, into the atmosphere.
What are some ways to conserve energy?
Using energy-efficient appliances, turning off lights when not in use, and improving insulation.
What is energy efficiency?
Using less energy to perform the same task.
How can we reduce our reliance on fossil fuels?
By investing in and using renewable energy sources.
What is the role of technology in developing renewable energy sources?
Technology helps improve the efficiency and reduce the cost of renewable energy.
