Question 1

Which is the balanced equation for the fission of U-235?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 2

Semiconductors,such as the element silicon,may be used in cells that convert solar radiation to electricity.One of the major difficulties encountered in using silicon is that it

Accepted Answer

A) is one of the rarest of all elements and therefore difficult to find on earth. 
B) is expensive to produce large quantities of extremely pure silicon. 
C) quickly evaporates when isolated in a pure state. 
D) is the most active of all the elements,so it cannot be prepared in a pure state. 
A) is one of the rarest of all elements and therefore difficult to find on earth. 
B) is expensive to produce large quantities of extremely pure silicon. 
C) quickly evaporates when isolated in a pure state. 
D) is the most active of all the elements,so it cannot be prepared in a pure state.

Question 3

The "doping" of a semiconductor to improve its performance means

Accepted Answer

A) slightly raising the temperature of a pure semiconductor to improve the ability of its electrons to flow from atom to atom. 
B) fusing layers of two different pure semiconductors together to give the electrons that absorb the solar radiation characteristics of the electrons of both semiconductors. 
C) mixing large amounts of a metal with small amounts of a semiconductor so that the metal itself becomes a semiconductor. 
D) adding small amounts of other elements to the pure semiconductor to change the freedom of electron motion throughout the crystal. 
A) slightly raising the temperature of a pure semiconductor to improve the ability of its electrons to flow from atom to atom. 
B) fusing layers of two different pure semiconductors together to give the electrons that absorb the solar radiation characteristics of the electrons of both semiconductors. 
C) mixing large amounts of a metal with small amounts of a semiconductor so that the metal itself becomes a semiconductor. 
D) adding small amounts of other elements to the pure semiconductor to change the freedom of electron motion throughout the crystal.

Question 4

Which of the following fission products released from the Chernobyl reactor is dangerous because it concentrates in bones?

Accepted Answer

A) I-131 
B) Sr-90 
C) C-14 
D) U-238 
A) I-131 
B) Sr-90 
C) C-14 
D) U-238

Question 5

Which is not a benefit associated with nuclear power plants?

Accepted Answer

A) Efficient production of electricity 
B) Reduction of CO2 in the atmosphere 
C) Inexpensive to operate 
D) Helps reduce the levels of acid rain 
A) Efficient production of electricity 
B) Reduction of CO2 in the atmosphere 
C) Inexpensive to operate 
D) Helps reduce the levels of acid rain

Question 6

Approximately what percentage of the electrical energy generated in the United States is produced from nuclear energy?

Accepted Answer

A) < 2 percent 
B) 10 percent 
C) 20 percent 
D) 50 percent 
A) < 2 percent 
B) 10 percent 
C) 20 percent 
D) 50 percent

Question 7

The half-life of carbon-14 is 5,730 years.If you started with 100.0 g of carbon-14,how much would remain after 4 half-lives?

Accepted Answer

A) 25.0 g 
B) 12.5 g 
C) 6.25 g 
D) 57.3 g 
A) 25.0 g 
B) 12.5 g 
C) 6.25 g 
D) 57.3 g

Question 8

Rank the forms of nuclear radiation from highest to lowest mass.

Accepted Answer

A) Gamma,alpha,beta 
B) Beta,gamma,alpha 
C) Alpha,gamma,beta 
D) Alpha,beta,gamma 
A) Gamma,alpha,beta 
B) Beta,gamma,alpha 
C) Alpha,gamma,beta 
D) Alpha,beta,gamma

Question 9

Sunlight (solar radiation) may be turned directly into electricity using ________ cells.

Accepted Answer

A) fuel 
B) photovoltaic 
C) electrolytic 
D) lead-acid 
A) fuel 
B) photovoltaic 
C) electrolytic 
D) lead-acid

Question 10

What percentage of a radioactive isotope would remain after three half-lives?

Accepted Answer

A) 6.3 percent 
B) 12.5 percent 
C) 25.0 percent 
D) 50.0 percent 
A) 6.3 percent 
B) 12.5 percent 
C) 25.0 percent 
D) 50.0 percent

Which is the balanced equation for the fission of U-235?

Semiconductors,such as the element silicon,may be used in cells that convert solar radiation to electricity.One of the major difficulties encountered in using silicon is that it

The "doping" of a semiconductor to improve its performance means

Which of the following fission products released from the Chernobyl reactor is dangerous because it concentrates in bones?

Which is not a benefit associated with nuclear power plants?

Approximately what percentage of the electrical energy generated in the United States is produced from nuclear energy?

The half-life of carbon-14 is 5,730 years.If you started with 100.0 g of carbon-14,how much would remain after 4 half-lives?

Rank the forms of nuclear radiation from highest to lowest mass.

Sunlight (solar radiation) may be turned directly into electricity using ________ cells.

What percentage of a radioactive isotope would remain after three half-lives?

Portable Electronics: the Periodic Table in the Palm of Your Hand

The Air We Breathe

Radiation From the Sun

Climate Change

Energy From Combustion

Energy Storage

Water Everywhere: A Most Precious Resource

The World of Polymers and Plastics

Brewing and Chewing

Nutrition

Health Medicine

Genes and Life

Who Killed Drthompson a Forensic Mystery

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Exam 6: Energy From Alternative Sources

Which is the balanced equation for the fission of U-235?

Semiconductors,such as the element silicon,may be used in cells that convert solar radiation to electricity.One of the major difficulties encountered in using silicon is that it

The "doping" of a semiconductor to improve its performance means

Which of the following fission products released from the Chernobyl reactor is dangerous because it concentrates in bones?

Which is not a benefit associated with nuclear power plants?

Approximately what percentage of the electrical energy generated in the United States is produced from nuclear energy?

The half-life of carbon-14 is 5,730 years.If you started with 100.0 g of carbon-14,how much would remain after 4 half-lives?

Rank the forms of nuclear radiation from highest to lowest mass.

Sunlight (solar radiation) may be turned directly into electricity using ________ cells.

What percentage of a radioactive isotope would remain after three half-lives?

Portable Electronics: the Periodic Table in the Palm of Your Hand

The Air We Breathe

Radiation From the Sun

Climate Change

Energy From Combustion

Energy Storage

Water Everywhere: A Most Precious Resource

The World of Polymers and Plastics

Brewing and Chewing

Nutrition

Health Medicine

Genes and Life

Who Killed Drthompson a Forensic Mystery

Filters