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Understanding Energy Forms, Sources, and Sustainability, Exams of Environmental Science

North Carolina State University (NCSU)Environmental Science

Various aspects of energy, including its forms, sources, and sustainable management. It discusses the laws of thermodynamics, fossil fuels, renewable and non-renewable energy, energy conservation, and passive solar design. The document also explains energy concepts such as kilowatt-hours and power density.

Typology: Exams

2013/2014

Uploaded on 04/28/2014

smchasta 🇺🇸

3 documents

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Climate(Change(and(Sustainability:((ES(200(

Exam(2,(Version(1(–(31(chances(to(get(30(points((

Name:((___________________________(ID(No.((_________________________(

!

1.!(T/F)!All!energy!technologies!used!to!generate!electricity!represent!some!form!of!a!heat!engine.!!

!

!2.!(T/F)!Geothermal!is!a!nonrenewable!energy!source!because!it!is!possible!to!extract!heat!and!steam!

faster!than!it!can!be!charged.!!

!3.!(T/F)!The!use!of!“Unit!Analysis”!involves!handling!both!units!and!numbers!in!similar!fashion!in!

mathematical!equations.!!

!4.!(T/F)!One!of!the!keys!to!sustainable!energy!is!to!figure!out!how!to!manage!energy!in!a!longJterm!way.!!

!

5.!(T/F)!A!solar!photovoltaic!panel!is!a!type!of!heat!engine.!!

6.!(T/F)!Deposits!of!petroleum,!natural!gas,!and!uranium!are!forms!of!solar!energy!stored!during!eons!of!

the!global!carbon!cycle.!!

!

7.!(T/F)!Fermentation!is!a!part!of!the!carbon!cycle!and!results!in!the!conversion!of!sugars!to!ethanol,!a!

process!used!to!make!beverages!and!biofuels!from!corn!and!other!plant!products.!!

!!

8.!(T/F)!Global!wind!power!installations!are!close!to!satisfying!one!"wedge"!to!stabilize!fossil!fuel!

emissions!over!the!next!50!years.!!

!9.!(T/F)!The!Laws!of!Thermodynamics!explain!the!behavior!of!all!energy!in!the!universe,!except!for!

nuclear!energy.!!

!

10.!(T/F)!Low!entropy!energy!is!also!the!highest!quality!energy.!!

!

11.!(T/F)!Heat!engines!are!the!most!relied!on!energy!sources!in!industrial!societies.!!

!

12.!(T/F)!China!relies!on!mostly!coal!for!energy,!while!the!US!relies!mostly!oil!to!fuel!industrial!

development.!!

!

13.!(T/F)!Corn!has!been!used!to!make!both!biodiesel!and!ethanol.!!

14.!(T/F)!NonJrenewable!energy!forms!include!fossil!fuels,!nuclear!fuels,!and!geothermal.!!

!

15.!(T/F)!Renewables!are!a!viable!option!but!performance,!cost,!and!land!use!are!key!challenges.!!

16.!Fossil!fuels!are!particularly!important!energy!sources!because:!!

A.!Fossil!fuels!have!a!lot!of!chemical!energy!per!unit!mass!or!volume!!

B.!Fossil!fuels!can!be!moved!to!sites!of!use!!

Discover Exams of Environmental Science North Carolina State University (NCSU)

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Download Understanding Energy Forms, Sources, and Sustainability and more Exams Environmental Science in PDF only on Docsity!

Climate Change and Sustainability: ES 200 Exam 2, Version 1 – 31 chances to get 30 points Name: ___________________________ ID No. _________________________

(T/F) All energy technologies used to generate electricity represent some form of a heat engine.
1. (T/F) Geothermal is a nonrenewable energy source because it is possible to extract heat and steam faster than it can be charged.
2. (T/F) The use of “Unit Analysis” involves handling both units and numbers in similar fashion in mathematical equations.
3. (T/F) One of the keys to sustainable energy is to figure out how to manage energy in a long-‐term way.
(T/F) A solar photovoltaic panel is a type of heat engine.
(T/F) Deposits of petroleum, natural gas, and uranium are forms of solar energy stored during eons of the global carbon cycle.
(T/F) Fermentation is a part of the carbon cycle and results in the conversion of sugars to ethanol, a process used to make beverages and biofuels from corn and other plant products.
(T/F) Global wind power installations are close to satisfying one "wedge" to stabilize fossil fuel emissions over the next 50 years.
1. (T/F) The Laws of Thermodynamics explain the behavior of all energy in the universe, except for nuclear energy.
(T/F) Low entropy energy is also the highest quality energy.
(T/F) Heat engines are the most relied on energy sources in industrial societies.
(T/F) China relies on mostly coal for energy, while the US relies mostly oil to fuel industrial development.
(T/F) Corn has been used to make both biodiesel and ethanol.
(T/F) Non-‐renewable energy forms include fossil fuels, nuclear fuels, and geothermal.
(T/F) Renewables are a viable option but performance, cost, and land use are key challenges.
Fossil fuels are particularly important energy sources because: A. Fossil fuels have a lot of chemical energy per unit mass or volume B. Fossil fuels can be moved to sites of use

C. Fossil fuels are cheap relative to other energy forms D. Fossil fuels are renewable E. A, B, and C, above

A kilowatt hour (kWh) is: A. Any factor that causes a body to accelerate B. The amount of energy transferred by a force through a distance C. A unit of energy equal to 1,000 watts of power expended for one hour D. Expression of an electromotive force E. None of the above
The first law of thermodynamics explains. A. Energy cannot be created or destroyed B. Chemical energy can be converted to mechanical energy C. Using electricity to heat a filament creating light emitted from an incandescent bulb D. A and B, above E. All of the above
Plants are less efficient at capturing solar energy than are solar photovoltaic panels because: A. Solar panels can capture a wider part of the solar spectrum B. Plants must use some of the energy they capture for their own metabolism C. Leaf area is too small D. B and C, above E. All of the above
A house has a roof area of 400m2. If 50% of the roof can be covered with solar photovoltaic panels, how much electric power can be produced? Assume the solar power reaching the rooftop is 200 W/m and panel can convert sunlight to electricity with 10% efficiency. A. 400 W B. 4,000 W C. 6,000 W D. 12,000 W E. 8,000 W
Which form of renewable energy has the lowest power density and therefore the largest land area requirement? A. Solar photovoltaic B. Solar thermal C. Wave D. Biomass E. Wind turbines
Energy use is increasing in developing nations such as China and India because: A. Populations in these countries is growing B. The economies are expanding C. Their standard of living is increasing

D. A and B, above E. All of the above

The following forms of biomass are used to make transport fuels: A. Algae B. Agricultural waste C. Switchgrass D. A and C, above E. All of the above
Which considerations apply to passive solar design: A. Southern exposure with large windows B. Walls and floors with thermal mass C. Solar voltaic panel on the roof D. A and B, above E. All of the above
What Exam Version number do you have? A. Version 1 B. Version 2 C. Does it matter? D. Optimus Prime E. None of the Above

Climate Change and Sustainability: ES 200 Exam 2, Version 2 – 31 chances to get 30 points Name: ___________________________ ID No. _________________________

(T/F) The Laws of Thermodynamics explain the behavior of all energy in the universe, except for nuclear energy.
(T/F) Corn has been used to make both biodiesel and ethanol.
(T/F) One of the keys to sustainable energy is to figure out how to manage energy in a long-‐term way.
1. (T/F) The use of “Unit Analysis” involves handling both units and numbers in similar fashion in mathematical equations.
(T/F) Geothermal is a nonrenewable energy source because it is possible to extract heat and steam faster than it can be charged.
(T/F) China relies on mostly coal for energy, while the US relies mostly oil to fuel industrial development.
(T/F) Heat engines are the most relied on energy sources in industrial societies.
(T/F) Low entropy energy is also the highest quality energy.
(T/F) All energy technologies used to generate electricity represent some form of a heat engine.
(T/F) Renewables are a viable option but performance, cost, and land use are key challenges.
(T/F) Non-‐renewable energy forms include fossil fuels, nuclear fuels, and geothermal.
(T/F) Global wind power installations are close to satisfying one "wedge" to stabilize fossil fuel emissions over the next 50 years.
(T/F) Fermentation is a part of the carbon cycle and results in the conversion of sugars to ethanol, a process used to make beverages and biofuels from corn and other plant products.
(T/F) A solar photovoltaic panel is a type of heat engine.
(T/F) Deposits of petroleum, natural gas, and uranium are forms of solar energy stored during eons of the global carbon cycle.
Fossil fuels are particularly important energy sources because: A. Fossil fuels have a lot of chemical energy per unit mass or volume B. Fossil fuels can be moved to sites of use C. Fossil fuels have little environmental impact

D. A and B above E. All of the above

Solar energy captured as photosynthesis: A. Created non-‐renewable fossil fuels B. Creates renewable energy such as biofuels C. Can provide energy for cellular respiration only for plants, but not animals D. A and B, above E. All of the above
Which energy source produces the most CO2 per kg and the least heat per kg? A. Gasoline B. Coal C. Natural gas D. Geothermal E. Wind
Energy use is increasing in developing nations such as China and India because: A. Populations in these countries is growing B. The economies are expanding C. Their standard of living is increasing D. They are building more coal and nuclear power plants E. All of the above
1. Which form of renewable energy has the lowest power density and therefore the largest land area requirement? A. Solar photovoltaic B. Solar thermal C. Wave D. Biomass E. Wind turbines
Plants are less efficient at capturing solar energy than are solar photovoltaic panels because: A. Solar panels can capture a wider part of the solar spectrum B. Plants must use some of the energy they capture for their own metabolism C. Leaf area is too small D. B and C, above E. All of the above
A house has a roof area of 400m2. If 50% of the roof can be covered with solar photovoltaic panels, how much electric power can be produced? Assume the solar power reaching the rooftop is 200 W/m and panel can convert sunlight to electricity with 10% efficiency.

A. 400 W

B. 4,000 W

C. 6,000 W

D. 12,000 W

E. 8,000 W

A kilowatt hour (kWh) is: A. Any factor that causes a body to accelerate B. The amount of energy transferred by a force through a distance C. A unit of energy equal to 1,000 watts of power expended for one hour D. Expression of an electromotive force E. None of the above
The first law of thermodynamics explains. A. Energy cannot be created or destroyed B. Chemical energy can be converted to mechanical energy C. Using electricity to heat a filament creating light emitted from an incandescent bulb D. A and B, above E. All of the above
What Exam Version number do you have? A. Version 1 B. Version 2 C. Does it matter? D. Optimus Prime E. None of the Above