ACTUAL Exam Questions and CORRECT
Answers
What kind of energy conversions occur in the incandescent light bulb? - CORRECT
ANSWER electrical to thermal
What would be the correct way to find the energy used by an electric appliance? - CORRECT
ANSWER multiply power by time
How much energy is used by a 700 W refrigerator over 1 day? - CORRECT ANSWER 16.8
Bulb A is 40 W and was on for 4 hours. Bulb B is 60 W and was on for 3hours. Which bulb used
more energy? - CORRECT ANSWER bulb B
Which of the following is NOT true about energy conversion devices? - CORRECT
ANSWER total energy output = useful energy output
The most of the world's energy use is covered by _____. - CORRECT ANSWER fossil fuels
Which of the following chemicals is a typical product of coal combustion? - CORRECT
ANSWER carbon dioxide, sulfur dioxide, nitrogen oxide, particulate matter
Where is the ozone hole located? - CORRECT ANSWER cold zones
Which of the common pollutants are known to harm the Earth's ozone layer? - CORRECT
ANSWER chlorine compounds
, What is PSU's main type of fuel used to heat buildings on campus? - CORRECT
ANSWER natural gas
Any energy spent for the extraction of raw materials, manufacturing, delivery of a particular
product or fuel is called _____. - CORRECT ANSWER embodied energy
True or False? The world's oil reserves represent the amount of fuel that has been demonstrated
to exist and can be economically extracted with available technologies. - CORRECT
ANSWER true
What was the approximate pre-industrial concentration of CO2 in the Earth's atmosphere? -
CORRECT ANSWER 280ppm
True of False? The greenhouse effect is considered human-induced phenomenon. - CORRECT
ANSWER false
What is the natural function of stratospheric ozone? - CORRECT ANSWER blocking UV
Which of the common pollutants are known to harm the Earth's ozone layer? - CORRECT
ANSWER chloro-fluorocarbons and other chlorines
What measures would help to curb accumulation of CO2 and other greenhouse gases in the
atmosphere? - CORRECT ANSWER -growing forests
-switching to electric heating devices
-decommissioning coal power plants
-using more efficient vehicles and appliances
-flying rather than driving
-developing renewable energy projects