chapter 14 study

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Solar energy is a _____ form of energy oriinating from ____ reactions in the sun

-kinetic
-thermonuclear

solar energy is a _____ form of energy

-renewable

4 main hudles to overcome in usingsolar energy are?

-cost
-utilities
-millions solar roofs
-new PV technologies

3 direct uses of solar energy

-heat water
-space heating
-power for rural homes

1.flat plate collectors
2.water pump
3.heat storage facility
4.expansion tank
5.blowers
6.backup system
7.heat exchanger
8.valves
9.improved insulation
10.appropriate landscaping
11. earth berms

1.passive
2.active
3.passive
4.active
5.active
6.both
7.both
8.active
9.passive
10.passive
11.passive

1.flate plate solar collector
2. water pump
3.heat storage facility
4.expansion tank
5.blowers
6.backup system
7.heat exchanger
8.valves
9.improved insulation
10.approriate landscaping
11.earth berms

1.solar hot water
2.solar hot water
3.space
4.solar hot water
5.space
6.both
7.space
8.both
9.space
10.space
11.space

a well designed home can substantially reduce enrgey bills with added construction costs of only ____ to ___ percent

-5%
-10%

about ___ percent of the total US energy budget is used for heating buildings and water

-25%

2 tech. that convert solar energy into electricity

-PV cells
-solar trough collectors

a device that converts light directly into electricity?

PV cells

the PV cell/solar cell consists of 2 layers of..?

atoms

the top layer contains atoms with ____ electrons in the outer oritbal

missing

the bottom layer contains atoms with ____ electrons in the outer oritbal

additional

the top layer will readly ____ an electron

accept

the bottom layer will readily ___ an electron

lose

the kinetic energy of sunlight forces a movement of electrons from the top to the bottom layer creating an electrical imbalance or..?

electrical potential/ potential

solar cel tech....
a.is becoming more cost effictive with increased use

b.will not wear out

c.is already competetive in costs per watt output

d. has the potenial to provide power for anything from a watch to a home

a. true

b.false

c.true

d.true

solar trough collectors convert____ percent of incoming sunlight to electric power at a cost of ___ cents per killowatt hour

22%
10 cents

the conominc feasibilty of the solar trough collector is enhanced by(more or less)
environmental pollution when compared to colar-fired facilities

more

power towers use mirrors to convert solar energy to _______ whihc runs __________that creates electricity

-molten sal liquid
-turbogenerators

the dish/engine system had dmonstarted efficiences of ___percent

30%

4 DISADVAMATGES TO SOLAR ENERGY TECH.

-espensive
-climate isn't always sunny
-only work during the day
-backup energy source or batery

3 hiddne costs in the use of traditional enrgy sources

-pollution
-greenhouse emissions
-strip mining

about _____ percet of our electrical power is generated by coal burning and nuclear power planst

72%

the use of solar lectrical power will

a.create ______ reliance on coal and /or nuclear power

b.lead to significantly_________acid rain

cptodice___________electrical power for villages in developing countries

-less
-less
-more

3 indirect forms of solar energy

-dams(water)
-wind mills(wind
-firewood(fire)

1.the earliest form of hydropower was the use of ________water falls

2.the contempoary form of hydropower is th euse of ____________water falls

3.artifical waterfall are created bu building hugue_________

4.the artifical waterfalls of huge dams generate____power

1.natrual
2.artifical
3.dams
4.hydro

1.level of pollution generated
2.level of environemental degradation
3.amount of total energy produced
4.geaographical distribution of energy produced
5.ecological impacts abovee and belowe the dam

hydroelectrical power

1.positive
2.negative
3.positive
4.positive
5.negative

only ____ percent of the nations rivers remain free flowing

2

many of the remaining free flowing rivers are protected y the..?

wild and scenic rivers act of 1968

the Nam Theum two dam will displace ____ people and destroy _____square miles of sensitive environment

-5700
-174

the 3 gorges dam will displace____people

1.9 million

the eariest form of harnessing wind power were wind______

mills

the contemporary form of harnessing wind power is wind_____

turbines

1.the size of limitations on wind turbines
2.# of megawatts of eectricity produced
3.level of pollution generated
4.level of environmentsl degradtion
5.geagraphical distribution of energy produced
6.cost effictivness
7.aesthetics

wind power

1.postive
2.positive
3.positive
4.positive
5.positive
6.positive
7.negative

3 examples of biomass or bioconversion

-burning firewood
-burning waste
-burning biogas(methane)

1.availabity of biomass resource
2.access to the biomass recourse
.3.public accpetance and utilization of biomass energy

1.positive
2.positive
3.positive

methane gas is _____use of biomass as fuels

indirect

one can get electrical power from cows than from nuclear power

true

1.if accesable it is an everlasting energy source
2.the consistency in number of megawats of electricity produced
3.the level of pollution genarted
4.the enevironemal degradtion
5.geaographical distribution of energy produced
6.cost-efficitnvess
7.tech required for extraction

tidal power

1.negative
2.negative
3.positive
4.negative
5.negative
6.negative
7.positive

1.technology
2.cost efficteness
3.enviconmetal consequences

OTEC

1.positive
2.negatice
3.positive

1.madates to increaseto increase fuel efficeincy of cars
2.explotion of public lands for fossil fuel reserves
3.subsides to producers to solar energyproditcst
4.continued researcg on and devolment of renewable energy resources
5.continued research on anfd dvelopment of alternative energy technologies
6.advocacy of energy conversion
7.public education onsolar and other renewable energy sources

us energy policies

1.positive
2.negative
3.positive
4.positive
5.positive
6.positive
7.negative

1,tax subsides for solar energy tech produtcion and uses
2.hybrid elevtric and fuel cell vehicles
3.reasearch ad dev on renweable energy sources
4.military support to assure acces to oil in the middle east
5.net metering
6,productions tax credits
7.cars get 55 miles per gallon by 2020
8.carbon tax
9.deregulaion of the electrical industry

clean energy blueprint

1
2
3
5
6
7
8

2 types of buofuels

-ethanol
-biodiesla

alchohol prodction is a _____use of biomas of fuel

direct

alchohol utilizes _____

both:fermentation and distillation

1.substitue for natrual gas
2.subsititute for gasoline
3.pollution factor
4.production tech
5.modification of existing transportaion tech
6.prouctiond costs
7.national distribution system

hydrogen power

1.positive
2.positive
3.positive
4.negative
5.negative
6.negative
7.negative

what is the distinguishing attributes of the vehicles called the model U , hy wire and freemdom car?

running on fuel cells

3 additional sustainable energy options

-geothermal energy
-tidal power
-heat pumps

1.if accesable it is an everlasting energy source
2.the consistency in number of megawats of electricity produced
3.the level of pollution genarted
4.the enevironemal degradtion
5.geaographical distribution of energy produced
6.cost-efficitnvess
7.tech required for extraction

geothermal power

1.positive
2.positive
3.positive
4.positive
5.negative
6.negative
7.positive

tidal power converts the energy of _____

both:incoming and outgoing tides

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