Eco-Kids Explore Ethanol

What is ethanol primarily used for?

• A delicious ingredient in beverages.

• A motor fuel for cars and trucks.

• An ingredient in snack foods and tortillas.

• A non-renewable resource.

What are two major problems associated with fossil fuels like gasoline and diesel?

• They are renewable resources and are expensive to extract.

• They are non-renewable resources and release pollutants when burned.

• They are difficult to transport and cause global warming.

• They are only found in a few locations and are not efficient.

Who was an early advocate for ethanol as a motor fuel, calling it "the fuel of the future"?

• Ryan Hunter-Reay

• Henry Ford

• Thomas Edison

• Nikola Tesla

What is the correct sequence of steps in converting corn into ethanol?

• Cook, Grind, Ferment, Distill, Dehydrate

• Grind, Cook, Ferment, Distill, Dehydrate

• Ferment, Grind, Cook, Distill, Dehydrate

• Dehydrate, Distill, Ferment, Cook, Grind

What is the initial product formed when corn starch is mixed with water and an enzyme during ethanol production?

• Dextrose

• Crude ethanol

• Mash

• Vaporized ethanol

What is the final step in purifying ethanol to achieve 200 proof pure ethanol?

• Adding a second enzyme to convert starch to sugar

• Mixing dextrose with yeast for fermentation

• Heating the mixture to vaporize ethanol

• Passing the liquid through a dehydration system

What is the composition of E10 ethanol, the most common blend used in vehicles?

• 85% ethanol, 15% unleaded gasoline

• 10% ethanol, 90% unleaded gasoline

• 100% pure ethanol

• 50% ethanol, 50% unleaded gasoline

Which of the following is an environmental advantage of using ethanol blends in cars?

• It increases the demand for imported oil.

• It is a non-renewable resource.

• It decreases toxic tailpipe emissions and greenhouse gases.

• It provides more power than pure gasoline.