Unit Review

Question 1 of 16

Electricity can be generated from many energy sources: coal, oil, natural gas, falling water (hydroelectric), nuclear fission, or sunlight. Each option has advantages that merit consideration. One advantage of using solar energy is that ______________.

A. Solar energy is less expensive

B. Solar energy is sustainable

C. Solar energy is continuous

D. Solar energy is easily stored

Question 2 of 16

In a typical power plant, a primary energy source such as a fossil fuel is burned to generate electricity. Which energy pathway below describes this process?

A. Thermal energy -> mechanical energy -> electrical energy

B. Chemical energy -> electrical energy -> mechanical energy

C. Chemical energy -> radiant energy -> electrical energy

D. None of the above

Question 3 of 16

A generator produces energy __________.

A. Based on the principle of electromagnetic induction

B. By spinning a conductor through a magnetic field

C. By spinning a magnetic field around a conductor

D. All of the above

Question 4 of 16

Which diagram below illustrates an electric current on the atomic level?

A. A

B. B

C. C

D. D

Question 5 of 16

How is most electricity in the United States generated?

A. From burning fossil fuels

B. From nuclear power

C. From renewable sources

D. From hydroelectric dams

Question 6 of 16

In the average home, which of the following uses the most energy?

A. Lighting

B. Heating water

C. Heating and cooling rooms

D. Refrigerating and cooking food

Question 7 of 16

According to this graph, what percentage of U.S. petroleum is imported?

A. 37 percent

B. 63 percent

C. 36 percent

D. Not enough information

Question 8 of 16

The graph at right illustrates the supply (S1 and S2) and the demand (D1) for gasoline. According to the graph, what happened when the price of gasoline increased from $2.00 to $2.25 per gallon?

A. As the price increased, the supply increased and the demand decreased.

B. As the price increased, so did the demand.

C. As the price increased, demand remained unchanged.

D. As the price increased, the supply decreased.

Question 9 of 16

A sustainable society __________.

A. Prohibits new development in a community

B. Returns to a more primitive style of living

C. Seeks to meet present needs without compromising the future

D. Adheres strictly to the goals of environmentalists

Question 10 of 16

Which of the following is not a characteristic of a sustainable society?

A. Conserves resources

B. Recycles whenever possible

C. Uses renewable resources whenever possible

D. Relies heavily on fossil fuels

Question 11 of 16

The United States consumes more gasoline than the other countries named on the graph below. Based on the graph and the principles of supply and demand, which statement is true?

A. U. S. demand for gasoline reduces the available supply.

B. As the price of gasoline increases, taxes increase.

C. As the price of gasoline increases, taxes decrease.

D. Some countries control the demand for gasoline through higher taxes.

Question 12 of 16

What can cause electrons to leave their atoms' outer shells and become free electrons?

A. Static electricity

B. Magnetic field

C. Chemical reaction

D. All of the above

Question 13 of 16

Use the graph at right to answer question 13.

EE/FSU = Eastern Europe and the Former Soviet Union

Which region currently has the greatest demand for energy?

A. North America

B. Developing Asia

C. Eastern Europe/Former Soviet Union

D. Other Industrialized Countries

Question 14 of 16

Use the graph at right to answer question 14.

EE/FSU = Eastern Europe and the Former Soviet Union

Which region is expected to have the largest growth in energy demand by 2020?