Chapter 17 - Energy Efficiency and Renewable
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Transcript Chapter 17 - Energy Efficiency and Renewable
Chapter 17
Test Review
Energy Efficiency and
Renewable Energy
What
is the least efficient
method of space heating?
Electric
(either through
nuclear or oil production
Best is passive solar
What
would encourage the
Solar-Hydrogen Revolution?
High oil prices, lack of
Government subsidies,
research funds
supply
What
percent of people in
developing countries heat
their house with wood or
charcoal?
70
percent
Which
way in the US should
windows face to gather solar
energy?
South
toward the Sun
What
effect does keeping
energy prices low have on the
US?
Increases
waste, reduces need
to investigate alternative energy
sources
What
are the effects of burning
biomass?
Increased CO2
Increased air pollution (soot,
smoke)
Increased NO, leads to acid rain
What
Two
is cogeneration?
forms of energy are
created from the same fuel
source, usually electricity and
heat
What
would the development
of renewable energy
resources do to the US?
Eventually
eliminate the need
of oil imports
What
is the fastest growing
energy resource?
Wind
power, but it is losing
its appeal, solar should be
rising soon
What
are the cells that
convert sunlight into
electricity called?
Photovoltaic
(solar) cells
What
does requiring high
fuel efficiency in cars do?
Reduces CO2 emissions
Reduces air pollution
Conserves energy resources
Describe
It
a wind farm
is where farmers plant and
grow wind from cloud seed
Or the large scale production of
electricity with wind turbines
What
is produced when you
burn hydrogen gas?
Water
and energy – no real
pollution
How
can industry reduce its
energy consumption?
Recycling
and reusing more
materials
Using cogeneration
Redesigning factories to be more
energy efficient
What
is magma?
Did
you picture Mike Meyers as Dr.
Evil with his little finger at the
corner of his mouth saying “mag-ma”…
or was it just me?
Hot,
liquid rock that can be used for
energy
Describe
the different types of
hydroelectric power
Large scale- big dams, large turbines
Small scale – little dams
Pumped storage – costs more, but can
be used when needed
How
can we increase the energy
efficiency of buildings?
Insulation, double paned
windows, cogeneration, changing
lighting, using passive solar
heating, buying “energy star”
equipment
How
can we improve energy
efficiency for the entire country?
Deport all the republicans
Jokes people, come on, Jokes
Car maintenance, better fuel
efficiency, car pooling, mass
transportation
Describe
wind power’s pros and
cons
Not always available, kills birds,
ugly, back up needed, noisy
No pollution, low long term cost,
high energy efficiency
What
are four examples of
renewable energy?
Wind
Water
Geothermal
Biomass
Which
energy resource improves
the quality of the environment
the most? (Not what you think)
Increased
energy efficiency
Describe
Direct
biomass fuels
burning of plants and
trees
Gaseous biofuels- SNG, wood gas
Liquid biofuels- Ethanol,
Methanol,Gasohol
What
would be a good type of
tree to grow for a biomass
plantation?
Fast
growing trees like poplar,
sycamore, cottonwood
What
does the government do to
manipulate which energy source is
used?
Price control
Subsidies
Regulations
Tax breaks
What
is the primary
component of solar cells?
Transparent wafer containing
semiconductor material
usually made from silicon
Name
some disadvantages to
hydroelectric power
High construction cost
Flooding upstream,
decreased flow downstream
Decreased silt downstream
What
is a micropower system?
Many smaller power generating
systems are used and connected
via an electricity grid
Use alternative energy sources
appropriate to the energy
Which
major country in the
world has not made a formal
commitment to rely primarily on
renewable sources for energy?
Go
US!
The
most expensive way to heat
your house is by using what?
Electric heater
The
best is by passive solar
combined with superinsulation
What
type of water heater is
the most efficient?
A
tankless instant water
heater powered by natural gas
Which
countries probably will
not adopt solar cell technology
in the future and why?
Northern
Countries due to
the lack of available sunshine
What
are the pros and cons of using
geothermal energy?
High efficiency, low CO2 emissions,
low land use, moderate environmental
disturbance
Few available sites, moderate air
pollution, noise and odor
What
is the best (most efficient)
way to heat a house?
A
small nuclear power plant in the
corner of the main living room
Or passive solar if you do not like to
glow at night
Which
fossil fuel has the
lowest environmental impact?
Natural
gas
Give
three examples of passive solar
design for homes
Direct gain – south facing window
Sunspace attached – room to capture
heat attached to house
Earth Sheltered – keeps house cool
in high temperature climates
According
to Amory Lovins, what
is the fast, cheap, easy way to
gain more energy without
environmental damage?
Energy conservation or
eliminating energy waste
Name
some of the disadvantages of
using biomass as an energy source
Uses
needed land
Hard to harvest sustainably
Desertification is typical
Often burnt inefficiently releasing a
large amount of pollutants
That’s all folks
You
should now know all these
concepts
Good
luck and good hunting