Question 1: One advantage of hydroelectric power generation is:

A. the production of high-level chemical waste but no greenhouse gases.

B. very high efficiency converting water to electrical energy.

C. a wide range of sites for plant construction.

D. low construction costs.

Question 2: Which of the following is NOT a disadvantage of hydroelectric power generation?

A. Dam construction causes loss of land suitable for agriculture.

B. Dam construction prevents upstream migration of fish.

C. Downstream water flow becomes unpredictable and creates extreme conditions.

D. Drought conditions can affect power production.

Question 3: The biggest roadblock for electric cars is:

A. storing the electricity needed to run them.

B. the inefficiency of the electric motor.

C. the lack of usable prototypes.

D. low-volume production.

Question 4: According to Michael Renner, the main objective of the war in Iraq is:

A. to Liberate Iraq.

B. to maintain a cheaper supply of oil.

C. because President Bush wanted to punish President Saddam Hussain.

D. for unidentified political advancements.