Title: Final Exam
Course: REEC 120 Sustainability and Renewable Energy > Section: REEC 120 Sustainability and Renewable Energy

Q: If the graph below is any indication, what has coal usage done in the last 200 plus years?

Graph used with permission from John Mackay’s Sustainable Energy Without the Hot Air

Q: Graph used with permission from John Mackay’s Sustainable Energy Without the Hot Air

In the figure above which geographic location emits the most greenhouse gas per population?

Q: Graph used with permission from John Mackay’s Sustainable Energy Without the Hot Air

In the figure above which geographic location could create more emissions as their development continues on the pace that it has been going?

Q: Graph used with permission from John Mackay’s Sustainable Energy Without the Hot Air

In the figure shown above, which human form of activity produces the most greenhouse emissions?

Q: Define the term “energy.”  Give an example of energy.

Q: Define the term “power.”  Give an example of power.

Q: What item can consume 1 kw?

Q: If a 30w light bulb is on for 48 hours how many kWh was used?

Q: What is entropy?

Q: Does electricity that is generated have high or low entropy? Explain your answer.

Q: In the equation above how much energy does your car use per day if the vehicle goes 250 kilometers per day and the vehicle can get 25 kilometers per liter.  Gasoline used by the car has an energy per unit of 34.3 MJ/liter.
- 392 MJ
- 343 MJ
- 214375MJ
- 182MJ
A: 343 MJ

Q: What is energy density?

Q: What has more energy density: 1 kg coal or 1 kg hydrogen?

Q: How much daily energy is this signage consuming (express as kWh)?

Q: Which month has the highest energy consumption?

For this month how much electrical energy was consumed (express as kWh)?

Why do you think it has the highest usage?

Q: What was the total amount of cost for the energy used (energy and adjusted)?

Q: If the daily consumption was lowered to 2kWh, how much energy would be saved in one 30-day month?

What would the savings, the cost, for this energy at $0.1, 10 cents, per kWh be for the one month?