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5.4.5 (Biomass Energy as Renewable Energy)

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Total cards: 21•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (21)

#1
Front (Question)

Biomass Energy

Back (Answer)

renewable organic material that comes from plants and animal

#2
Front (Question)

Biomass Energy Drawback (think about what happens when biomass products combust to create what?)

Back (Answer)

Air pollution is released when biomass products combust (burn) to generate electricity biomass: renewable organic material that comes from plants and animals

#3
Front (Question)

Benefit (think about what is being sequestered when burning biomass to make ___?)

Back (Answer)

Carbon is sequestered (hidden) when burning biomass to make biochar

#4
Front (Question)

Benefit about making ethanol?

Back (Answer)

NO carbon is produced when fermenting biomass to make ethanol (biofuel)

#5
Front (Question)

Example (think harvesting)

Back (Answer)

Crops (wheat, corn, soy, sugar)

#6
Front (Question)

Example 2?

Back (Answer)

Wood

#7
Front (Question)

Example (think decomposed animals)

Back (Answer)

Manure (animal feces and urine)

#8
Front (Question)

Example (think gas)

Back (Answer)

Landfill gas

#9
Front (Question)

Example (think plants)

Back (Answer)

Algae

#10
Front (Question)

This starting material for alternative fuels requires a lot of land

Back (Answer)

crops (corn)

#11
Front (Question)

These 2 atoms that biomass is composed of make it organic matter

Back (Answer)

Carbon and Hydrogen

#12
Front (Question)

This is the name of the process that creates ethanol used for fuel

Back (Answer)

fermentation yeast undergo with no oxygen (O2) that produces ethyl alcohol (ethanol) instead of CO2

#13
Front (Question)

This is the name of the type of biomass used as an alternative to coal

Back (Answer)

biochar

#14
Front (Question)

This is the organism used for fuel because of its fatty/oily composition

Back (Answer)

algae

#15
Front (Question)

Biochar

Back (Answer)

• created by heating biomass to about 200 degrees Celsius w/out oxygen • sequesters carbon instead of releasing it as methane and carbon dioxide

#16
Front (Question)

Syngas

Back (Answer)

• “synthetic” gas made from biomass, which can be used to power a turbine • created by heating biomass to about 700 degrees Celsius

#17
Front (Question)

Biofuels

Back (Answer)

Biofuels are made by fermenting (breaking down) high-carbohydrate materials such as sugar cane, wheat, and corn.

#18
Front (Question)

Disadvantage of biomass?

Back (Answer)

• not easy to replenish • burning releases CO2

#19
Front (Question)

Benefit (think crops)

Back (Answer)

Biomass materials are plentiful (crops)

#20
Front (Question)

algal fuel

Back (Answer)

Algal fuel is derived from algae, which is grown in ocean water. It does not deplete freshwater or soil resources.

#21
Front (Question)

How is organic material converted into biomass?

Back (Answer)

• Organic material is burned to generate heat that can be converted into electricity. • Before biomass is burned, it must be dried.