chapter 21 multiple choice questions (answers)

21.1 Sources of renewable energy, and potential for growth

Currently, the fastest-growing source of electricity generation using new renewable sources is ________.

solar

wind

hydro

natural gas

coal AnB

Diff: 1

Ob21.1 Sourc

Right behind the correct answer in the preceding question as the second fastest-growing source is ________.

solar

wind

hydro

natural gas

coal AnA

Diff: 1

Ob21.1 Sources of renewable energy, and potential for growth

The

those who believe human health is impacted by smog and pollution

those who believe fossil fuel dependence is suicide because it makes us vulnerable to the Middle East

concerns over diminishing fossil fuel supplies and negative environmental impacts of fossil fuel

One of the obstacles to the rapid replacement of nonrenewable energy sources with renewable energy sources is ________.

the improvement in the infrastructure for using renewable energy sources

the lack of government and private

rooftop solar panels

OTEC

photovoltaic cells

rooftop flat-plate solar collectors AnA

Diff: 1

Ob21.2 Solar energy: how harnessed, advantages, disadvantages

Solar represents a minuscule portion of U.S. energy production because of ________.

poor outlook for potential for this energy source

potential for pollution from this source of energy AnB

Diff: 1

Ob21.2 Solar energy: how harnessed, advantages, disadvantages

A major advantage of solar power is that ________.

cost is prohibitive

E Diff: 1

21.2 Solar energy: how harnessed, advantages, disadvantages

A major disadvantage of solar power is ________.

its cost-effectiveness compared to other types of power

its efficiency level compared to other types of power

the varia

21.2 Solar energy: how harnessed, advantages, disadvantages

10)

Prior to 1950, the main use of windmills in the United States was for ________.

energy generation

grinding grain for bread

pumping water for irrigating crops

draining

higher, to minimize turbulence and maximize wind speed

lower, to minimize turbulence and maximize wind speed

higher, to minimize the number of birds that interfere with blade turning

lower, to increase heat convection from the ground

highe

that people can use a single mill or develop a large--scale wind farm

the initial startup cost

that land can be leased for wind power development

D Diff: 2

21.3 Wind energy: how harnessed, advantages, disadvantages

13)

A major obstacle to the

the lack of large land areas needed to construct wind farms

B Diff: 1

21.3 Wind energy: how harnessed, advantages, disadvantages

14)

Offshore wind farms are being seriously considered because ________.

they are more aesthetically pleasing

they do

21.3 Wind energy: how harnessed, advantages, disadvantages

15)

The current practice of geothermal power generation may not provide a practical renewable energy source because ________.

in many cases, the heated groundwater is used much faster than it is recharged

in many cases, the magma is

motion of currents, waves and tides; ocean thermal energy

solar reflection

lightning strikes in salt water

magnetic field generators

B Diff: 2

21.5 Ocean energy: how harnessed, advantages, disadvantages

17)

One major reason for the

the lack of technological advancement

the lack of political support

A Diff: 2

21.5 Ocean energy: how harnessed, advantages, disadvantages

18)

The largest problem with adopting the new technology of renewable resources is ________.

evaluating the scientific and economic impacts

that the start-up costs are high

that long-term maintenance costs are higher than those for fossil fuels

that technological advances have not been made in the last 30 years to meet our energy needs

21.1 Sources of renewable energy, and potential for growth

20)

Fuel cell technology has been used in the United States since the 1960s because ________.

it was originally slated for use in cars by Ford

it was used widely in NASA's spaceflight

is not properly understood

is less efficient than fossil fuels

requires a fuel that is a nonrenewable resource

requires an energy investment to begin the process

has highly volatile and dangerous components

D Diff: 1

21.6 Hydrogen

how the hydrogen is extracted

governmental incentives for research

this is not correct; hydrogen is always cleaner

C Diff: 1

21.6 Hydrogen fuel cells and future options

23)

One advantage of using hydrogen fuel cells is ________.

ntial for production of greenhouse gases

the ease of transporting and storage

the energy efficiency

that they are nonpolluting

the low impact on atmospheric ozone

D Diff: 2

21.6 Hydrogen fuel cells and future options

21.6 Hydrogen fuel cells and future options

25)

Mary Ann is looking at alternate energy sources for her home in the country, particularly wind and solar. She needs to consider ________.

impact of air pollution on the community

the amount of year-round sunshine where she lives, wind spee

creates greenhouse gases but no acid deposition

can be produced where and when electricity is needed

converts the kinetic energy of earth processes to electrical energy

already has an infrastructure in place for using hydrogen as fuel

C

the West

the Florida Keys

A Diff: 1

21.4 Geothermal: how harnessed, advantages, disadvantages

28)

Wind will not be a major energy resource in ________.

the SE

the NW

California

Texas

the NE

21.3 Wind energy: how harnessed, advantages, disadvantages