Question 1

Which of these is not a portion of a Solar Two solar thermal storage unit?

Accepted Answer

A) Turbine 
B) Control rod 
C) Central receiver 
D) Condensor 
E) Heliostat 
A) Turbine 
B) Control rod 
C) Central receiver 
D) Condensor 
E) Heliostat

Question 2

Which of these is the most significant problem with solar energy , apart from low concentrations ?

Accepted Answer

A) Low levels of processing. 
B) Intermittence of sunlight. 
C) Inefficient storage. 
D) High cost of collecting. 
E) Lack of sufficient collecting systems. 
A) Low levels of processing. 
B) Intermittence of sunlight. 
C) Inefficient storage. 
D) High cost of collecting. 
E) Lack of sufficient collecting systems.

Question 3

Which of these is a cleaner alternate fuel source to fossil fuels?

Accepted Answer

A) Solar 
B) Wind 
C) Hydroelectric 
D) Geothermal 
E) All of these 
A) Solar 
B) Wind 
C) Hydroelectric 
D) Geothermal 
E) All of these

Question 4

Which of these forms of energy use heliostats to focus the suns energy?

Accepted Answer

A) Solar thermal 
B) Wind 
C) Hydroelectric 
D) Biomass 
E) Geothermal 
A) Solar thermal 
B) Wind 
C) Hydroelectric 
D) Biomass 
E) Geothermal

Question 5

Which of these is the correct notation for indicating that a semiconductor is electron rich when combined with a dopant such as Arsenic ?

Accepted Answer

A) e-type 
B) s-type 
C) n-type 
D) n\p-type 
E) ( − )type 
A) e-type 
B) s-type 
C) n-type 
D) n\p-type 
E) ( − )type

Question 6

Space heating accounts for approximately _____% of energy use in an average U. S. household.

Accepted Answer

A) 10% 
B) 20% 
C) 30% 
D) 41.5% 
E) 50% 
A) 10% 
B) 20% 
C) 30% 
D) 41.5% 
E) 50%

Question 7

Which of these heating sources is most effective in heating homes ?

Accepted Answer

A) Solar energy 
B) Electricity 
C) Hydropower 
D) Geothermal 
E) Natural gas 
A) Solar energy 
B) Electricity 
C) Hydropower 
D) Geothermal 
E) Natural gas

Question 8

​ The efficiency of a solar system which uses a focusing system covering 135 m2 and produces 41.0 kW of power is approximately _____ considering the solar power available is 1000 W\m2.

Accepted Answer

A) ​ 1.8% 
B) ​ 14% 
C) ​ 30 % 
D) ​ 55% 
E) ​ 94% 
A) ​ 1.8% 
B) ​ 14% 
C) ​ 30 % 
D) ​ 55% 
E) ​ 94%

Question 9

Which of these statements about the Sun is incorrect ?

Accepted Answer

A) The Sun radiates 1026 watts of energy constantly into space. 
B) The earth receives approximately 1 part per billion of the Sun's energy. 
C) The main problem with solar energy is that it is not energetic enough for use. 
D) Using solar energy is a problem because of its relatively low concentration. 
E) All of these are correct statements. 
A) The Sun radiates 1026 watts of energy constantly into space. 
B) The earth receives approximately 1 part per billion of the Sun's energy. 
C) The main problem with solar energy is that it is not energetic enough for use. 
D) Using solar energy is a problem because of its relatively low concentration. 
E) All of these are correct statements.

Question 10

Which of these elements would result in an electron rich semiconductor when added to silicon?

Accepted Answer

A) B 
B) Al 
C) Ge 
D) C 
E) P 
A) B 
B) Al 
C) Ge 
D) C 
E) P

Question 11

Which process is represented in the equation?
​
Energy + 2H2O → 2H2 + O2

Accepted Answer

A) Photosynthesis 
B) Electrolysis 
C) Photovoltaic cell 
D) Respiration 
E) Combustion 
A) Photosynthesis 
B) Electrolysis 
C) Photovoltaic cell 
D) Respiration 
E) Combustion

Question 12

Which of theses items will not help in the conservation of household energy?

Accepted Answer

A) Electric heaters 
B) Lowering thermostats 
C) Using fluorescent lighting 
D) Installing double-pane windows 
E) All of these will conserve energy. 
A) Electric heaters 
B) Lowering thermostats 
C) Using fluorescent lighting 
D) Installing double-pane windows 
E) All of these will conserve energy.

Question 13

Which of these is not a problem associated with utilizing solar energy?

Accepted Answer

A) Low concentration of solar energy supply. 
B) Low efficiency of solar cells for collecting solar energy 
C) High cost associated with constructing solar technologies. 
D) Hazardous wastes associated with solar cell decomposition. 
E) Both C and D 
A) Low concentration of solar energy supply. 
B) Low efficiency of solar cells for collecting solar energy 
C) High cost associated with constructing solar technologies. 
D) Hazardous wastes associated with solar cell decomposition. 
E) Both C and D

Question 14

In which of these regions does hydroelectric power have the greatest potential for growth?

Accepted Answer

A) Mountainous regions 
B) Desert regions 
C) Developing countries 
D) United States 
E) Island nations 
A) Mountainous regions 
B) Desert regions 
C) Developing countries 
D) United States 
E) Island nations

Question 15

Which of these are systems that utilize solar thermal energy?
I. Solar power tower
II. Parabolic trough
III. Dish engine

Accepted Answer

A) I only 
B) II only 
C) I, II and III 
D) I and II 
E) I and III 
A) I only 
B) II only 
C) I, II and III 
D) I and II 
E) I and III

Question 16

What percentage of energy is lost by converting from natural gas to electricity to heat a home?

Accepted Answer

A) 10% 
B) 30% 
C) 50% 
D) 70% 
E) 90% 
A) 10% 
B) 30% 
C) 50% 
D) 70% 
E) 90%

Question 17

Which of these elements would result in an electron poor semiconductor when added to silicon?

Accepted Answer

A) As 
B) Sb 
C) P 
D) B 
E) Se 
A) As 
B) Sb 
C) P 
D) B 
E) Se

Question 18

Which of these is the most significant problem with biomass energy?

Accepted Answer

A) Inefficient 
B) Global warming 
C) Insufficient land 
D) Expensive to produce 
E) Hazardous wastes 
A) Inefficient 
B) Global warming 
C) Insufficient land 
D) Expensive to produce 
E) Hazardous wastes

Question 19

Transportation in the U.S.  accounts for what percentage of energy consumption?

Accepted Answer

A) 10% 
B) 25% 
C) 50% 
D) 75% 
E) 85% 
A) 10% 
B) 25% 
C) 50% 
D) 75% 
E) 85%

Question 20

How many square meters of photovoltaic cells would be required to provide sufficient energy to light a 60 W computer monitor? Photovoltaic cells are 15% efficient in converting 1000 W\m2 of solar energy to electricity.

Accepted Answer

A) 0.40 m2 
B) 2.5 m2 
C) 14 m2 
D) 9 m2 
E) 400 m2 
A) 0.40 m2 
B) 2.5 m2 
C) 14 m2 
D) 9 m2 
E) 400 m2

Which of these is not a portion of a Solar Two solar thermal storage unit?

Which of these is the most significant problem with solar energy , apart from low concentrations ?

Which of these is a cleaner alternate fuel source to fossil fuels?

Which of these forms of energy use heliostats to focus the suns energy?

Which of these is the correct notation for indicating that a semiconductor is electron rich when combined with a dopant such as Arsenic ?

Space heating accounts for approximately _____% of energy use in an average U. S. household.

Which of these heating sources is most effective in heating homes ?

The efficiency of a solar system which uses a focusing system covering 135 m² and produces 41.0 kW of power is approximately _____ considering the solar power available is 1000 W\m².

Which of these statements about the Sun is incorrect ?

Which of these elements would result in an electron rich semiconductor when added to silicon?

Which process is represented in the equation? Energy + 2H₂O → 2H₂ + O₂

Which of theses items will not help in the conservation of household energy?

Which of these is not a problem associated with utilizing solar energy?

In which of these regions does hydroelectric power have the greatest potential for growth?

Which of these are systems that utilize solar thermal energy? I. Solar power tower II. Parabolic trough III. Dish engine

What percentage of energy is lost by converting from natural gas to electricity to heat a home?

Which of these elements would result in an electron poor semiconductor when added to silicon?

Which of these is the most significant problem with biomass energy?

Transportation in the U.S. accounts for what percentage of energy consumption?

How many square meters of photovoltaic cells would be required to provide sufficient energy to light a 60 W computer monitor? Photovoltaic cells are 15% efficient in converting 1000 W\m² of solar energy to electricity.

Molecular Reasons

The Chemists Toolbox

Atoms and Elements

Molecules, Compounds, and Chemical Reactions

Chemical Bonding

Organic Chemistry

Light and Color

Nuclear Chemistry

Energy for Today

The Air Around Us

The Liquids and Solids Around Us: Especially Water

Acids and Bases: the Molecules Responsible for Sour and Bitter

Oxidation and Reduction

The Chemistry of Household Products

Biochemistry and Biotechnology

Drugs and Medicine: Healing, Helping, and Hurting

The Chemistry of Food

Nanotechnology

Filters

Exam 10: Energy for Tomorrow: Solar and Other Renewable Energy Sources

Which of these is not a portion of a Solar Two solar thermal storage unit?

Which of these is the most significant problem with solar energy , apart from low concentrations ?

Which of these is a cleaner alternate fuel source to fossil fuels?

Which of these forms of energy use heliostats to focus the suns energy?

Which of these is the correct notation for indicating that a semiconductor is electron rich when combined with a dopant such as Arsenic ?

Space heating accounts for approximately _____% of energy use in an average U. S. household.

Which of these heating sources is most effective in heating homes ?

​ The efficiency of a solar system which uses a focusing system covering 135 m2 and produces 41.0 kW of power is approximately _____ considering the solar power available is 1000 W\m2.

Which of these statements about the Sun is incorrect ?

Which of these elements would result in an electron rich semiconductor when added to silicon?

Which process is represented in the equation? ​ Energy + 2H2O → 2H2 + O2

Which of theses items will not help in the conservation of household energy?

Which of these is not a problem associated with utilizing solar energy?

In which of these regions does hydroelectric power have the greatest potential for growth?

Which of these are systems that utilize solar thermal energy? I. Solar power tower II. Parabolic trough III. Dish engine

What percentage of energy is lost by converting from natural gas to electricity to heat a home?

Which of these elements would result in an electron poor semiconductor when added to silicon?

Which of these is the most significant problem with biomass energy?

Transportation in the U.S. accounts for what percentage of energy consumption?

How many square meters of photovoltaic cells would be required to provide sufficient energy to light a 60 W computer monitor? Photovoltaic cells are 15% efficient in converting 1000 W\m2 of solar energy to electricity.

Molecular Reasons

The Chemists Toolbox

Atoms and Elements

Molecules, Compounds, and Chemical Reactions

Chemical Bonding

Organic Chemistry

Light and Color

Nuclear Chemistry

Energy for Today

The Air Around Us

The Liquids and Solids Around Us: Especially Water

Acids and Bases: the Molecules Responsible for Sour and Bitter

Oxidation and Reduction

The Chemistry of Household Products

Biochemistry and Biotechnology

Drugs and Medicine: Healing, Helping, and Hurting

The Chemistry of Food

Nanotechnology

Filters

The efficiency of a solar system which uses a focusing system covering 135 m² and produces 41.0 kW of power is approximately _____ considering the solar power available is 1000 W\m².

Which process is represented in the equation? Energy + 2H₂O → 2H₂ + O₂

How many square meters of photovoltaic cells would be required to provide sufficient energy to light a 60 W computer monitor? Photovoltaic cells are 15% efficient in converting 1000 W\m² of solar energy to electricity.