Question 1

What are the limitations of geothermal energy for meeting large scale energy needs?

Accepted Answer

Geothermal energy, which harnesses the h

Question 2

The major component of natural gas is

Accepted Answer

A) ethane. 
B) methane. 
C) butane. 
D) octane. 
A) ethane. 
B) methane. 
C) butane. 
D) octane.

Question 3

When coal burns,

Accepted Answer

A) chemical energy is converted to heat energy. 
B) heat energy is created. 
C) chemical energy is destroyed. 
D) heat energy is converted to electrical energy. 
A) chemical energy is converted to heat energy. 
B) heat energy is created. 
C) chemical energy is destroyed. 
D) heat energy is converted to electrical energy.

Question 4

The internal heat from the earth is due to

Accepted Answer

A) absorbed solar radiation from the land. 
B) absorbed solar radiation from the oceans. 
C) radioactivity and gravitation forces in the earth's mantle and core. 
D) mysterious processes not well understood. 
A) absorbed solar radiation from the land. 
B) absorbed solar radiation from the oceans. 
C) radioactivity and gravitation forces in the earth's mantle and core. 
D) mysterious processes not well understood.

Question 5

The lowest grade of coal is

Accepted Answer

A) anthracite. 
B) bituminous. 
C) lignite. 
D) peat. 
A) anthracite. 
B) bituminous. 
C) lignite. 
D) peat.

Question 6

Approximately what percentage of the chemical energy of a fossil fuel electrical power plant is "lost" as heat energy?

Accepted Answer

A) 20% 
B) 40% 
C) 60% 
D) 80% 
A) 20% 
B) 40% 
C) 60% 
D) 80%

Question 7

The state of matter characterized by atomic nuclei and free electrons is called a

Accepted Answer

A) gas. 
B) liquid. 
C) solid. 
D) plasma. 
A) gas. 
B) liquid. 
C) solid. 
D) plasma.

Question 8

Wood,crop residues,and ________ still remain the main sources of heat for one-third of the world's people.

Accepted Answer

A) coal. 
B) natural gas 
C) petroleum 
D) dried dung 
A) coal. 
B) natural gas 
C) petroleum 
D) dried dung

Question 9

If very pure silicon is doped with a small amount of arsenic,the resulting crystal is called a(n)

Accepted Answer

A) solar cell. 
B) n-type semiconductor 
C) p-type semiconductor 
D) battery. 
A) solar cell. 
B) n-type semiconductor 
C) p-type semiconductor 
D) battery.

Question 10

Which of the following is NOT a problem associated with nuclear power plants?

Accepted Answer

A) air pollution 
B) disposal of spent nuclear fuel 
C) tailings from the mining of uranium ore 
D) thermal pollution 
A) air pollution 
B) disposal of spent nuclear fuel 
C) tailings from the mining of uranium ore 
D) thermal pollution

Question 11

Most solar cells are composed primarily of

Accepted Answer

A) arsenic. 
B) sulfur. 
C) nickel. 
D) silicon. 
A) arsenic. 
B) sulfur. 
C) nickel. 
D) silicon.

Question 12

The fastest growing energy source in the United States is

Accepted Answer

A) biomass. 
B) geothermal. 
C) hydroelectric power. 
D) wind power. 
A) biomass. 
B) geothermal. 
C) hydroelectric power. 
D) wind power.

Question 13

The thin film of air,water,and soil in which all life exists is only about 15 km thick and is called the

Accepted Answer

A) atmosphere. 
B) stratosphere. 
C) biosphere. 
D) hemisphere. 
A) atmosphere. 
B) stratosphere. 
C) biosphere. 
D) hemisphere.

Question 14

When coal containing sulfur is burned,the sulfur is converted to

Accepted Answer

A) gaseous sulfur oxides that go up the smokestack. 
B) liquid sulfur oxides that stay behind as ash. 
C) solid sulfur oxides that stay behind as ash. 
D) Sulfur is converted to all of the above. 
A) gaseous sulfur oxides that go up the smokestack. 
B) liquid sulfur oxides that stay behind as ash. 
C) solid sulfur oxides that stay behind as ash. 
D) Sulfur is converted to all of the above.

Question 15

A breeder reactor converts

Accepted Answer

A) nonfissionable U-238 to fissionable U-235. 
B) nonfissionable U-238 to fissionable Pu-239. 
C) fissionable U-235 to fissionable U-238. 
D) fissionable U-235 to fissionable Pu-239. 
A) nonfissionable U-238 to fissionable U-235. 
B) nonfissionable U-238 to fissionable Pu-239. 
C) fissionable U-235 to fissionable U-238. 
D) fissionable U-235 to fissionable Pu-239.

Question 16

The United States has 5% of the world's population and uses 20% of the world's energy.

Accepted Answer

A) True 
 B)False

Question 17

Entropy can be decreased by putting more work into the system.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following statements best describes the status of nuclear fusion as an energy source?

Accepted Answer

A) Nuclear fusion generates some electrical power today. 
B) Nuclear fusion will be a viable source of energy by the year 2010. 
C) Nuclear fusion will solve all of our energy problems in the 21st century. 
D) Nuclear fusion may help solve our energy problems in the future. 
A) Nuclear fusion generates some electrical power today. 
B) Nuclear fusion will be a viable source of energy by the year 2010. 
C) Nuclear fusion will solve all of our energy problems in the 21st century. 
D) Nuclear fusion may help solve our energy problems in the future.

Question 19

When a liquid is converted to a gas there is an increase in entropy.

Accepted Answer

A) True 
 B)False

Question 20

The structural material of plants is largely

Accepted Answer

A) amylopectin. 
B) coal. 
C) amylose. 
D) cellulose. 
A) amylopectin. 
B) coal. 
C) amylose. 
D) cellulose.

Exam 15: Energy

What are the limitations of geothermal energy for meeting large scale energy needs?

The major component of natural gas is

When coal burns,

The internal heat from the earth is due to

The lowest grade of coal is

Approximately what percentage of the chemical energy of a fossil fuel electrical power plant is "lost" as heat energy?

The state of matter characterized by atomic nuclei and free electrons is called a

Wood,crop residues,and ________ still remain the main sources of heat for one-third of the world's people.

If very pure silicon is doped with a small amount of arsenic,the resulting crystal is called a(n)

Which of the following is NOT a problem associated with nuclear power plants?

Most solar cells are composed primarily of

The fastest growing energy source in the United States is

The thin film of air,water,and soil in which all life exists is only about 15 km thick and is called the

When coal containing sulfur is burned,the sulfur is converted to

A breeder reactor converts

The United States has 5% of the world's population and uses 20% of the world's energy.

Entropy can be decreased by putting more work into the system.

Which of the following statements best describes the status of nuclear fusion as an energy source?

When a liquid is converted to a gas there is an increase in entropy.

The structural material of plants is largely

Chemistry

Atoms

Atomic Structure

Chemical Bonds

Chemical Accounting

Gases, Liquids, Solids, and Intermolecular Forces

Acids and Bases

Oxidation and Reduction

Organic Chemistry

Polymers

Nuclear Chemistry

Chemistry of the Earth

Air

Water

Biochemistry

Food

Drugs

Fitness and Health

Chemistry Down on the Farm

Household Chemicals

Poisons

Filters