APES Unit 6

A home uses ten 100-watt lightbulbs for five hours per day. approximately how many kilowatt-hours of electrical energy and consumed in one year by using the lightbulbs?

1825

What was the approximate percent increase in consumption from 1986 to 1997?

20%

Burning one gallon of gasoline in a car releases approximately 20 pounds of CO2 into the atmosphere. One person drives 60,000 miles in a car that averages 30 miles per gallon (mpg), while another person drives 60,000 miles in a car that averages 20 mpg. Over the course of the 60,000 miles, how many fewer pounds of CO2 are released by the 30 mpg car than by the 20 mpg car?

20,000

The half-life of a radioactive substance with the decay rate shown in the graph above is closest to

7 seconds

More commonly used in the least developed countries than in higher developed countries

Biomass

The source whose use is a direct cause of deforestation

Biomass

Living organisms must acquire energy from their environment. Examples of adaptation that help organisms squire this energy include which of the following?

I and II only: dark heat absorbing, fangs and claws

The sources that produces long-lived hazardous wastes

Nuclear Fission

which of the following best describes the process of electricity generation at a nuclear power plant

Nuclear power is generated through fission, which releases a large amount of heat. the heat is used to generate steam, which turns a turbine that powers a generator.

Which of the following explains why some energy sources are renewable?

Renewable energy sources can be replenished naturally, as or near the rate of consumption.

Which is true

Thermal energy is converted into mechanical energy and then to electrical energy as in coal-burning power plants

In the majority of less developed countries, the major source of energy for domestic use is which of the following

biomass

Hydraulic fracturing, or fracking, is the pumping of highly pressurized water with a mixture of sand and chemicals into boreholes to

create cracks within the rock in order to provide pathways for the release of gas and oil.

One solution for reducing the amount of atmospheric carbon dioxide would be to

decrease the use of fossil fuels

Which of the following is the primary environmental problem associated with the use of nuclear power to generate electricity

disposal of radioactive waste

A major limitation of using photovoltaic cells to generate electricity is that they

do not produce as much electricity on cloudy days

The source that is not renewable

nuclear fission

Compared to a coal-fired power plant that produces the same amount of energy, a nuclear power plant generates more

particulates

There are various stages in the formation of coal as heat and pressure are increased and moisture content is decreased. These stages, in order are

peat, lignite, bituminous, anthracite

Which of the following is a way for the government to encourage efficent energy use

requiring higher fuel economy standards.

Is renewable

solar

The source that is converted directly into electrical energy by photovoltaic cells

sunlight

The separation of various components of crude oil in refineries is accomplished primarily by taking advantage of differenced in which of the following?

the boiling points of the components

According to the data plotted in the graph above

the increase in all oil consumption outpaced the increase in coal and natural gas consumption.

Between 1960 and 1970, world oil consumption approximately doubled. which of the following explanation is consistent with the increase?

the number of cars on the road increased

Which of the following has the largest proven coal reserve?

the united states

Which of the following metals is considered an energy source?

uranium