How Is Cellulosic Ethanol Different From Traditional Corn Based Ethanol

Question: How much uranium oxide did the United States produce in 2005?

ANSWER:

5 million pounds

40 million pounds

65 million pounds

20 million pounds

Answer: 5 million

Question: In what year did uranium oxide production peak in the United States?

ANSWER:

1970

1980

1960

1950

Answer: 1980

Question: What was the net amount of uranium imported into the United States in 2005?

ANSWER:

65 million pounds

20 million pounds

45 million pounds

5 million pounds

Answer: 45 million pounds

Question: Describe the trends in uranium oxide domestic production from the peak production year to 2005.

ANSWER:

Domestic production declined slightly.

Domestic production declined dramatically.

Domestic production increased dramatically.

Domestic production increased slightly.

Answer: Domestic production declined dramatically.

Question:

Answer: decrease domestic production and increase imports and exports.

Question: Based on the yearly average values, calculate one person’s residential electricity needs for a year.

ANSWER:

1,560 kWh per year

370 kWh per year

130 kWh per year

4,440 kWh per year

Answer: 4,440 kWh per year

Question: Based on the yearly average values, calculate the solar radiation per square meter for one year.

ANSWER:

4,440 kWh per year

1,560 kWh per year

370 kWh per year

130 kWh per year

Answer: 1,560 kWh per year

Question: Assume that photovoltaic conversion of solar energy has 10% efficiency. Calculate how many square meters of photovoltaic cells would be needed to supply one person’s electricity for the year, based on the yearly average values.

ANSWER:

2.85 m2

0.285 m2

0.0285 m2

28.5 m2

Answer: 28.5 m2

Question: If efficiency of photovoltaic cells improves to 40%, how many square meters of photovoltaic cells would be needed for one person’s yearly electricity use?

ANSWER:

2.85 m2

7.12 m2

11.4 m2

1.14 m2

Answer: 7.12 m2

Question:

Answer: 12.5