1.Which laundry method saves more energy?
a) using a clothesline instead of a dryer
b) washing with cold water instead of hot water
(Answer on next page)
For every two minutes a car idles, it uses the same amount of fuel it takes to drive
a) a quarter-mile
b) a half-mile
c) a mile
Stand-by power – energy consumed by appliances turned off but plugged in – accounts for how much of all US residential energy use?
a) 1 percent
b) 3 percent
c) 5 percent
What is the biggest expense on your utility bill?
a) computers and electronics
How much land would be needed to replace all of the world’s current use of fossil fuels with biofuels such as wood, charcoal, ethanol, and biodiesel?
c) 6 .6 million square miles (equal to the area of Russia)
Turning off your car engine and restarting it uses as much gas as about the equivalent of
a) 10 seconds of idling
b) 30 seconds of idling
c) 1 minute of idling
Which nation is the top foreign supplier of oil to the US?
b) Saudi Arabia
Which of these countries has the lowest energy consumption per capita?
b) United States
c) Trinidad and Tobago
A CFL (compact fluorescent lamp) that produces the same amount of light as a 100-watt incandescent bulb will use only about
a) 10 watts
b) 25 watts
c) 60 watts