Question 1

Solar power towers use Sun-tracking mirrors called _________.

Accepted Answer

A) reflectometers 
B) heliostats 
C) receivers 
D) condensors 
A) reflectometers 
B) heliostats 
C) receivers 
D) condensors

Question 2

Which of these is the most common type of semiconductor found in photovoltaic cells?

Accepted Answer

A) Arsenic 
B) Carbon 
C) Uranium 
D) Silicon 
E) Hydrogen 
A) Arsenic 
B) Carbon 
C) Uranium 
D) Silicon 
E) Hydrogen

Question 3

Which of these is currently the most cost competitive at creating fuel to replace fossil fuels?
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 4

What percentage of energy is conserved by heating a house directly with natural gas?

Accepted Answer

A) 10-20% 
B) 30-40% 
C) 50-60% 
D) 70-90% 
E) 95-98% 
A) 10-20% 
B) 30-40% 
C) 50-60% 
D) 70-90% 
E) 95-98%

Question 5

Which of these is a disadvantage of wind power?
I. Wind farms use large portions of land which can not be used or other purposes.
II. Wind farms are undependable since winds are not always there when needed.
III. Wind power generation is extremely expensive and not competitive with other fuels.

Accepted Answer

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

Question 6

Which of these is product of the combustion of hydrogen?

Accepted Answer

A) Methane 
B) Water 
C) Oxygen 
D) Carbon dioxide 
E) More than one answer is correct 
A) Methane 
B) Water 
C) Oxygen 
D) Carbon dioxide 
E) More than one answer is correct

Question 7

Which of these is not a problem associated with photovoltaic cells?
I. The cells are very inefficient.
II. Semiconductors are expensive to construct.
III. The cells must absorb large amounts of energy for useful applications.

Accepted Answer

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

Question 8

Which of these is a disadvantage of nuclear power as an alternative energy source?
I. Limited amounts of U-235
II. Radioactive wastes
III. Smog production

Accepted Answer

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

Question 9

Which of these is not a commercial application of photovoltaic cells?

Accepted Answer

A) Night lights 
B) Highway call boxes 
C) Watches 
D) Cell phones 
E) Calculators 
A) Night lights 
B) Highway call boxes 
C) Watches 
D) Cell phones 
E) Calculators

Question 10

Which of these accounts for the largest amount of household energy consumption?

Accepted Answer

A) Water heating 
B) Air-conditioning 
C) Space-heating 
D) Appliances 
E) Television 
A) Water heating 
B) Air-conditioning 
C) Space-heating 
D) Appliances 
E) Television

Question 11

Photovoltaic systems take solar energy and convert it into ____.

Accepted Answer

A) heat 
B) electricity 
C) electrons 
D) solar thermal power 
E) steam 
A) heat 
B) electricity 
C) electrons 
D) solar thermal power 
E) steam

Question 12

Which of these forms of power is the worlds' most utilized alternate energy source?

Accepted Answer

A) Geothermal 
B) Hydroelectric 
C) Wind 
D) Biomass 
E) Nuclear 
A) Geothermal 
B) Hydroelectric 
C) Wind 
D) Biomass 
E) Nuclear

Question 13

How many square meters of photovoltaic cells would be required to provide sufficient energy to light a 100 W light bulb? Photovoltaic cells are 15% efficient in converting 1000 W\m2 of solar energy to electricity.

Accepted Answer

A) 6.6 × 10 − 1 m2 
B) 15 m2 
C) 67 m2 
D) 200 m2 
E) 275 m2 
A) 6.6 × 10 − 1 m2 
B) 15 m2 
C) 67 m2 
D) 200 m2 
E) 275 m2

Question 14

Which of these is the correct notation for indicating that a semiconductor is electron deficient?

Accepted Answer

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

Question 15

Which of these methods is not a mechanism currently being explored for storing solar energy?

Accepted Answer

A) Light capture 
B) Heat storage 
C) Battery storage 
D) Creation of chemical bonds 
E) All of these are acceptable methods. 
A) Light capture 
B) Heat storage 
C) Battery storage 
D) Creation of chemical bonds 
E) All of these are acceptable methods.

Question 16

Which of these is not an application where photovoltaic cells are used?
I. Solar cars
II. Battery chargers
III. Satspace industry
IV. Calculators

Accepted Answer

A) I and II 
B) I and III 
C) I, II and III 
D) I, III and IV 
E) all of these  use photovoltaic cells 
A) I and II 
B) I and III 
C) I, II and III 
D) I, III and IV 
E) all of these  use photovoltaic cells

Question 17

Which of the following has not been used as a fuel for a vehicle?

Accepted Answer

A) Hydrogen 
B) Ethanol 
C) Solar power 
D) Fuel cell 
E) None of the above 
A) Hydrogen 
B) Ethanol 
C) Solar power 
D) Fuel cell 
E) None of the above

Question 18

Which of these household appliances consumes the greatest amount of electricity per year?

Accepted Answer

A) Television 
B) Stereo 
C) Clothes dryer 
D) Coffee maker 
E) Dishwasher 
A) Television 
B) Stereo 
C) Clothes dryer 
D) Coffee maker 
E) Dishwasher

Question 19

Which of these is not a problem associated with geothermal energy?

Accepted Answer

A) It has limited availability. 
B) Vented steam usually contains sulfurous and ammonia gases. 
C) Global warming results because of the high levels of CO2 produced. 
D) Condensed steam from the earth's crust is corrosive to mechanical parts. 
E) All of these are problems with geothermal energy. 
A) It has limited availability. 
B) Vented steam usually contains sulfurous and ammonia gases. 
C) Global warming results because of the high levels of CO2 produced. 
D) Condensed steam from the earth's crust is corrosive to mechanical parts. 
E) All of these are problems with geothermal energy.

Question 20

Which of these methods is utilized for the storage of solar energy by forming chemical bonds?

Accepted Answer

A) Replication 
B) Photosynthesis 
C) Electrolysis 
D) Combustion 
E) Photovoltaic cells 
A) Replication 
B) Photosynthesis 
C) Electrolysis 
D) Combustion 
E) Photovoltaic cells

Solar power towers use Sun-tracking mirrors called _________.

Which of these is the most common type of semiconductor found in photovoltaic cells?

Which of these is currently the most cost competitive at creating fuel to replace fossil fuels? I. Solar power tower II. Parabolic trough III. Dish engine

What percentage of energy is conserved by heating a house directly with natural gas?

Which of these is a disadvantage of wind power? I. Wind farms use large portions of land which can not be used or other purposes. II. Wind farms are undependable since winds are not always there when needed. III. Wind power generation is extremely expensive and not competitive with other fuels.

Which of these is product of the combustion of hydrogen?

Which of these is not a problem associated with photovoltaic cells? I. The cells are very inefficient. II. Semiconductors are expensive to construct. III. The cells must absorb large amounts of energy for useful applications.

Which of these is a disadvantage of nuclear power as an alternative energy source? I. Limited amounts of U-235 II. Radioactive wastes III. Smog production

Which of these is not a commercial application of photovoltaic cells?

Which of these accounts for the largest amount of household energy consumption?

Photovoltaic systems take solar energy and convert it into ____.

Which of these forms of power is the worlds' most utilized alternate energy source?

How many square meters of photovoltaic cells would be required to provide sufficient energy to light a 100 W light bulb? Photovoltaic cells are 15% efficient in converting 1000 W\m² of solar energy to electricity.

Which of these is the correct notation for indicating that a semiconductor is electron deficient?

Which of these methods is not a mechanism currently being explored for storing solar energy?

Which of these is not an application where photovoltaic cells are used? I. Solar cars II. Battery chargers III. Satspace industry IV. Calculators

Which of the following has not been used as a fuel for a vehicle?

Which of these household appliances consumes the greatest amount of electricity per year?

Which of these is not a problem associated with geothermal energy?

Which of these methods is utilized for the storage of solar energy by forming chemical bonds?

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

Solar power towers use Sun-tracking mirrors called _________.

Which of these is the most common type of semiconductor found in photovoltaic cells?

Which of these is currently the most cost competitive at creating fuel to replace fossil fuels? I. Solar power tower II. Parabolic trough III. Dish engine

What percentage of energy is conserved by heating a house directly with natural gas?

Which of these is a disadvantage of wind power? I. Wind farms use large portions of land which can not be used or other purposes. II. Wind farms are undependable since winds are not always there when needed. III. Wind power generation is extremely expensive and not competitive with other fuels.

Which of these is product of the combustion of hydrogen?

Which of these is not a problem associated with photovoltaic cells? I. The cells are very inefficient. II. Semiconductors are expensive to construct. III. The cells must absorb large amounts of energy for useful applications.

Which of these is a disadvantage of nuclear power as an alternative energy source? I. Limited amounts of U-235 II. Radioactive wastes III. Smog production

Which of these is not a commercial application of photovoltaic cells?

Which of these accounts for the largest amount of household energy consumption?

Photovoltaic systems take solar energy and convert it into ____.

Which of these forms of power is the worlds' most utilized alternate energy source?

How many square meters of photovoltaic cells would be required to provide sufficient energy to light a 100 W light bulb? Photovoltaic cells are 15% efficient in converting 1000 W\m2 of solar energy to electricity.

Which of these is the correct notation for indicating that a semiconductor is electron deficient?

Which of these methods is not a mechanism currently being explored for storing solar energy?

Which of these is not an application where photovoltaic cells are used? I. Solar cars II. Battery chargers III. Satspace industry IV. Calculators

Which of the following has not been used as a fuel for a vehicle?

Which of these household appliances consumes the greatest amount of electricity per year?

Which of these is not a problem associated with geothermal energy?

Which of these methods is utilized for the storage of solar energy by forming chemical bonds?

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

How many square meters of photovoltaic cells would be required to provide sufficient energy to light a 100 W light bulb? Photovoltaic cells are 15% efficient in converting 1000 W\m² of solar energy to electricity.