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Middle School: 6th, 7th and 8th Grade
Biology
Biofuels
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Q.1
What are biofuels made from?
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Coal
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Oil
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Gas
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Animal and plant material
Q.2
Biogas is primarily made up of which gas?
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Methane
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Oxygen
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Carbon dioxide
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Hydrogen
Q.3
Biogas is made by which process?
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Aerobic respiration
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Alcoholic fermentation
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Anaerobic fermentation
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Respiration
Q.4
Biogas generators can be filled with which of the following?
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Air
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Water
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Feces
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Nitrogen
Q.5
In a biogas generator, what does the animal or plant material supply?
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Carbohydrate (sugar)
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Protein
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Fat
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Water
Q.6
Methane is a greenhouse gas and contributes to...
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the weather
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global warming
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ozone depletion
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respiration
Q.7
Which of the following is caused by global warming?
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Increased temperature of the Earth
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Rise in sea levels
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Increased biodiversity
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Climate change
Q.8
What is biodiversity?
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The number of species
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The population of humans
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The variety of birds
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The number of trees
Q.9
Biogas is produced at a faster rate if the temperature is...
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increased
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decreased
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unchanged
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heated for longer
Q.10
Biogas generators are useful in developing countries such as Africa, because they easily and cheaply get rid of what?
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Fuel
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Air
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Waste
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Soil
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