Ch 13.7 Notes

What does transitioning to new energy systems involve?

• Rethinking policy, energy use practices, and technology

• Increasing fossil fuel usage

• Reducing technological advancements

• Ignoring energy policies

What are some co-benefits of transitioning to new energy systems?

• Cost savings, cleaner air, and avoiding extreme climate change

• Higher energy costs and increased pollution

• More reliance on non-renewable resources

• Decreased job opportunities

What is one expected outcome of the energy transition?

• Creation of millions of jobs and economic development

• Decrease in technological innovation

• Increase in unemployment rates

• Reduction in renewable energy sources

What is an alternative to storing and transporting energy?

• Generating it locally, on demand

• Storing it in large batteries

• Transporting it via power lines

• Using solar panels exclusively

What is a key difference between fuel cells and batteries?

• Fuel cells are larger than batteries

• Fuel cells are recharged by adding fuel, while batteries are recharged by adding electrical current

• Batteries are more efficient than fuel cells

• Fuel cells are only used in cars

What happens to hydrogen at the electrode in a fuel cell?

• It combines with oxygen.

• It is converted into water.

• A catalyst strips electrons from it.

• It is released as a gas.

What is created when protons rejoin electrons in a fuel cell?

• Oxygen

• Water (H₂O)

• Hydrogen gas

• Carbon dioxide

What is the role of the cathode in a fuel cell?

• It acts as a negative electrode.

• It combines protons and electrons.

• It strips electrons from hydrogen.

• It stores energy.

What is the charge of the cathode in a fuel cell?

• Positive

• Neutral

• Negative

• Variable

What percentage of the renewable energy scenario for 2050 is projected to come from PV (Photovoltaics)?

• 37.95%

• 19.08%

• 30.92%

• 7.3%