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WorksheetsBiomass and Biofuels
Total questions: 20
Worksheet time: 7mins
Name
Class
Date
1.
When plants require large amounts of water and fertilizer to grow, the disadvantage is a small or nonexistent?
a)
product
b)
profit margin
c)
carbon emission
d)
amount of energy
2.
Greenhouse gases add to global warming by trapping some of the heat reflected by the Earth in the?
a)
stratosphere
b)
troposphere
c)
hemisphere
d)
biosphere
3.
The amount of biomass energy in the U.S. that comes from garbage is about?
a)
4.50%
b)
12%
c)
20%
d)
23%
4.
About 20 percent of the total land in the U.S. is?
a)
arid
b)
swamp
c)
cropland
d)
under urban development
5.
Most of the feedstock for woodburning biomass power generation plants comes from within?
a)
25 miles
b)
100 miles
c)
150 miles
d)
200 miles
6.
The U.S. DOE and USDA encourage renewable energy through grants and ?
a)
jobs
b)
farm aid
c)
education
d)
tax incentives
7.
B-20 is a mixture of bio-diesel and?
a)
ethanol
b)
methanol
c)
pyrolysis oil
d)
petroleum diesel
8.
In a biomass power generation plant, finely ground wood is conveyed from one location to another by high-pressure air blowing through large-diameter ducts called?
a)
boilers
b)
screens
c)
combustion chambers
d)
pneumatic distributors
9.
Growing plants absorb sunlight and convert it into chemical energy in a process called?
a)
hydrolysis
b)
torrefaction
c)
gasification
d)
photosynthesis
10.
From 2007 to 2030, gasoline consumption is projected to increase on an energy basis by?
a)
12%
b)
19%
c)
32%
d)
47%
11.
The feedstock that yields about five times more energy than goes into it is?
a)
corn
b)
cotton
c)
soybeans
d)
switchgrass
12.
Because it is light and fluffy, sawdust can create handling problems, so it is usually mixed with?
a)
coal
b)
wood chips
c)
natural gas
d)
wood pellets
13.
Material produced from living or recently living plants or animals and their metabolic byproduct is?
a)
char
b)
MSW
c)
biofuel
d)
biomass
14.
Fast pyrolysis takes place in the middle temperature range over a limited amount of time, producing mostly liquid, called?
a)
ethanol
b)
biodiesel
c)
methanol
d)
pyrolysis oil
15.
A type of pulverizer with high-speed blades that grinds wood rejects into tiny chips so they can re-enter the feedstock system is called a?
a)
bulldozer
b)
travel gate
c)
hammerhog
d)
combustion chamber
16.
By 2050, roughly 15 to 25 percent of the world's energy needs may be met by?
a)
rock oil
b)
biomass sources
c)
new heat sources
d)
thermal developments
17.
Among the disadvantages of biomass energy is that although the source is renewable, many of the processes produce large amounts of?
a)
ozone
b)
hydrogen
c)
toxic metal
d)
harmful emissions
18.
The stray metallic particles such as nails, staples, bailing wire, and other bits of metal collected with the wood are called?
a)
trash
b)
debris
c)
scrap iron
d)
tramp iron
19.
Facilities that convert biomass to fuels, power, and other usable products are called?
a)
stills
b)
gasifiers
c)
power plants
d)
biorefineries
20.
Syngas is a mixture made of hydrogen, carbon dioxide, and carbon monoxide and formed by a simple reaction between coal and?
a)
MSW
b)
steam
c)
carbon
d)
methane
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