The Ultimate Biofuels Crops Quiz

Staff

4 Min Quiz

Which of the following is not a biofuel?

Ethanol and methanol are biofuels created when carbohydrates from various plants are distilled into alcohol. Natural gas is a fossil fuel.

Advertisement

Which was the first automobile designed to run on ethanol?

Henry Ford was a huge proponent of ethanol as a source of fuel. He designed the Model T's engine to run on gasoline, ethanol or both.

Advertisement

Which gas can be collected from landfills and used to generate energy?

The world's landfills are huge sources of methane gas, which is produced when bacteria breaks down organic materials, such as yard and food waste. Gas recovery systems capture methane and use the gas to generate electricity.

Advertisement

Which biofuel is produced by the fermentation of corn or sugar cane?

Refineries can turn starchy plants, such as corn, sugar beet and sugar cane into ethanol. Methanol is made from wood, butanol is made generally from farm waste.

Advertisement

Which of the following is the most popular "energy" crop?

Wood easily outdistances cotton and soybean as a major energy crop. Millions around the world use wood as a source of fuel. Wood is also used in biomass-fired heating and electricity generating plants.

Advertisement

Which country began substituting ethanol-powered vehicles for gasoline-powered vehicles in the 1980s?

After the energy crisis of the 1970s, Brazil stepped up its production of ethanol from sugar cane. By the end of the 1980s, most Brazilians drove ethanol-powered vehicles.

Advertisement

Which biofuel is known as wood alcohol?

Methanol distilled from wood was once a popular fuel. Today, most methanol is made from natural gas.

Advertisement

Which biofuel did the U.S. government ban during Prohibition?

Because ethanol was a product of fermentation, the government considered it a liquor. As such, the feds banned ethanol when Prohibition began in 1920. However, people could sell ethanol if it was spiked with poison.

Advertisement

Which of these biofuels produces more energy from corn?

When distilled from a bushel of corn, butanol generates 24 percent more energy than ethanol.

Advertisement

Which form of biomass has the potential to dwarf all other types of biomass with minimal impact to the environment?

Some scientists believe that 43,000 square feet of algae could one day produce more than 3,500 gallons of biodiesel each year. With water covering more than 70 percent of the planet, that's a lot of biodiesel.

Advertisement

In which year was the first ethanol-powered engine built?

In 1862, American inventor named Samuel Morey built the first engine that ran on ethanol and turpentine.

Advertisement

Which state produces the most ethanol?

As of 2009, Iowa was the main producer of ethanol in the United States, growing more than 3.2 billion bushels of corn for use as ethanol. Nebraska was the second largest ethanol producer. Montana and Minnesota didn't make the cut.

Advertisement

Which biofuel can power a fuel cell?

Butanol is high in hydrogen atoms. Those atoms can be easily and cheaply recovered during the distillation process and used in fuel cells.

Advertisement

Scientists can convert the biofuel from which vegetable into a working battery?

Not only can you mash or bake a potato, but you can convert the tuber into a battery. Scientists at Hebrew University say potatoes could provide a cheap source of electricity in rural regions.

Advertisement

Which of the following countries leads the world in building biogas digesters that convert fuel from animal and crop waste in to energy?

India has more than 2.5 million biogas digesters, which use cow dung as a source of energy. Out of 100,000 dairy farms in the Untied States, only 62 use biogas digesters.

Advertisement

In the United States, biodiesel fuel is mostly made from which type of oil?

According to the University of Connecticut, Americans grew 3.4 billion bushels of soybeans in 2009, which had the potential to produce 5.1 billion gallons of biodiesel.

Advertisement

Which process allows green plants to convert sunlight into chemical energy?

Photosynthesis is the process by which green plants turn carbon dioxide and water into carbohydrates and oxygen, using light energy trapped by chlorophyll.

Advertisement

Of the following, which country is the largest producer of ethanol?

The United States led the way in ethanol production in 2009, producing 10.6 billion gallons. Brazil was second, producing about 8 billion gallons.

Advertisement

Which ingredients are needed to break down the sugar in a plant to make ethanol?

Bacteria and yeast break down long strings of sugar molecules into alcohol.

Advertisement

Which of the following states uses the most amount of ethanol?

Californians use on average 900 million gallons of ethanol each year.

Advertisement

Explore More Quizzes

Image: refer to hsw

About This Quiz

No longer the stuff of science fiction, the future is now when it comes to green energy. Test your biofuel and energy crop IQ with this electrifying quiz.

About HowStuffWorks Play

How much do you know about dinosaurs? What is an octane rating? And how do you use a proper noun? Lucky for you, HowStuffWorks Play is here to help. Our award-winning website offers reliable, easy-to-understand explanations about how the world works. From fun quizzes that bring joy to your day, to compelling photography and fascinating lists, HowStuffWorks Play offers something for everyone. Sometimes we explain how stuff works, other times, we ask you, but we’re always exploring in the name of fun! Because learning is fun, so stick with us!