Q: Which equation best represents the conversion of solar energy to electrical energy in photovoltaic cells?

$$\text{Sunlight} + \text{Silicon cell} \rightarrow \text{Electricity}$$

Q: Which of the following equations best represents the process in a hydrogen fuel cell?

$$2H_2 + O_2$ \rightarrow 2H_2O + \text{Electricity}$$

Question 1

Which of the following best explains why new renewable energy sources have not been adopted as quickly as fossil fuels or nuclear power in the United States?

Accepted Answer

There has been a lack of policy incentives and government investment compared to fossil fuels and nuclear power.

Question 2

Which renewable energy source has the highest average yearly growth rate according to the provided data?

Accepted Answer

PV solar

Question 3

A homeowner wants to reduce heating costs in winter and cooling costs in summer by using the temperature stability underground. Which technology should they consider?

Accepted Answer

Ground source heat pump

Question 4

Which of the following is a major drawback of wind power?

Accepted Answer

Wind does not always occur, and population centers are not always in the windiest areas.

Question 5

Which equation best represents the conversion of solar energy to electrical energy in photovoltaic cells?

Accepted Answer

$$	ext{Sunlight} + 	ext{Silicon cell} ightarrow 	ext{Electricity}$$

Question 6

Which of the following is a benefit of concentrated solar power plants?

Accepted Answer

They focus sunlight over a wide area to a single point, increasing efficiency.

Question 7

Why is geothermal energy considered regionally limited in the United States?

Accepted Answer

High underground temperatures suitable for energy extraction are only found in certain areas.

Question 8

Which of the following best describes the role of hydrogen in hydrogen fuel cells?

Accepted Answer

Hydrogen is an energy carrier that stores and delivers energy produced from other sources.

Question 9

A city located far from the coast wants to invest in renewable energy. Which option is least practical for them?

Accepted Answer

Tidal energy

Question 10

Which of the following is a disadvantage of solar energy?

Accepted Answer

It is not available at night or in all locations equally.

Question 11

Which country currently produces the largest share of global wind power?

Accepted Answer

China

Question 12

Which of the following best explains why offshore wind farms are advantageous compared to onshore wind farms?

Accepted Answer

Offshore wind speeds are generally higher and less turbulent.

Question 13

Which of the following equations best represents the process in a hydrogen fuel cell?

Accepted Answer

$$2H_2 + O_2$ ightarrow 2H_2O + 	ext{Electricity}$$

Question 14

Which renewable energy source is most commonly used for electricity generation in the United States?

Accepted Answer

Hydropower

Question 15

A farmer in a windy region wants to earn extra income without stopping farming. Which renewable energy option is most suitable?

Accepted Answer

Leasing land for wind turbines

Question 16

Which of the following is a potential ecological concern associated with ocean energy technologies?

Accepted Answer

Disruption of marine habitats

Question 17

Which of the following best describes passive solar energy?

Accepted Answer

Positioning buildings and using materials to naturally collect and store heat from the sun

Question 18

Which of the following is a reason why hydrogen fuel cells are not yet widely used?

Accepted Answer

The infrastructure for hydrogen production, storage, and distribution is not fully developed.

Question 19

Which of the following best explains why hydropower is not considered a 'new' renewable energy source?

Accepted Answer

Hydropower has been widely used for electricity generation for many decades.

Question 20

Which of the following is a multi-step process for generating geothermal electricity?

Accepted Answer

Underground heat creates steam, which turns a turbine and generates electricity; steam is then cooled and re-injected into the ground.

New Renewable Energy Alternatives: Mechanisms, Benefits, and Drawbacks

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