SO245 Lesson 3 Exam

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Which statement is false as regards hydroelectric power?

  d) Mechanical energy is the main product of hydroelectric plants.

According to the third law of thermodynamics, energy ceases to exist at a temperature called absolute zero. This is considered a(n) _______ limit.

  c) theoretical

Burning biomass for fuel expresses carbon _______, because it balances the amount of carbon added and removed from the atmosphere.

  c) neutrality

_______ is a byproduct of coal and vital to steel production.

  c) Coke

All of the following are problems related to wind power, except

  d) wind as a source of power is limited to less populated areas.

The fact that sunlight is not directly available at night or on cloudy days is referred to as the _______ problem.

  a) intermittency

Which carbon-rich compound is found in the Earth in liquid form?

  b) Crude oil

A watt is the equivalent of one _______ per second.

  c) joule

_______ energy is a fundamental need for life on Earth.

  b) Solar

Which statement best describes the major disadvantage of geothermal energy?

  b) This type of energy can only be harnessed in specific locations.

Two students are discussing the disadvantages of biomass. Student 1 claims that when biomass is burned, too many toxins are released, worsening air pollution. Student 2 claims that planting biofuel crops uses too much farmland that could be used for food. According to this course, who is correct?

  a) Both Students 1 and 2 are correct.

_______ energy results from the combination of kinetic and potential energy.

  a) Mechanical

The amount of energy required to raise one pound of water by 1 degree Fahrenheit equals one

  a) BTU.

The three stages in the combustion of gas in an internal combustion engine are combustion, thermal energy, and _______ energy.

  d) mechanical

Peat is the least carbon-rich substance burned for fuel. The coal with the richest carbon content is _______ coal.

  d) anthracite

Wind power capacity in the United States has increased annually by _______ percent.

  b) 30

In general, the efficiency of an internal combustion engine is thirty percent. The remaining seventy percent is mainly dissipated as _______ energy.

  a) heat

_______ is a “rare earth” mineral crucial to the construction of solar panels.

  b) Tellurium

Two students are discussing energy sectors in the United States. Student 1 claims that the commercial sector includes automobiles and churches. Student 2 agrees but also includes construction in the commercial list. Who is correct?

  b) Neither Student 1 nor 2 are correct.

Percentage-wise, which renewable energy source is used most?

  d) Biomass

The first law of thermodynamics, also called the _______ law, says that the total energy of the universe is constant.

  b) conservation

In which part of the United States are geothermal power plants found?

  a) Southwest

_______ is a vital, rare earth mineral extracted from briny pools located in the Andes.

  d) Lithium

Globally, more than half of consumed energy is in the _______ sector.

  b) industrial

Energy efficiency is reduced as we _______ the number of steps needed to get energy from its source to useful work.

  c) increase

The United States produced 16 quadrillion BTUs of which type of energy in 2017?

  d) Coal

Chemical energy is stored in the bonds of

  c) molecules.

How many calories in a kilocalorie?

  c) 1,000

Which statement regarding nuclear fission is true?

  a) The cost of building a nuclear power plant is high.

Under the third law of thermodynamics, energy ceases to exist at a temperature called absolute zero. The concept of absolute zero is, in fact, a/an __________ limit.

  theoretical

In general, the efficiency of an internal combustion engine is 30 percent. The remaining 70 percent is mainly dissipated as:

  heat energy.

There are two side-by-side graphs found in your reading under “United States Energy Usage and Trends.” Looking at the left-hand graph – consumption trends from 1990 to 2014 – what are the two renewable sources that have expanded most dramatically?

  Biofuels and wind

Which of the following byproducts of coal is vital to steel production?

  Coke

Which energy source combines kinetic and potential energy?

  Mechanical energy

Respecting the EIAs four energy-consumption sectors, Gene argues that the commercial sector includes rented condos and churches. Gina agrees with Gene except that she includes strip malls in her list of commercial entities. Who is correct?

Question options:

  Both are incorrect.

Peat is the least carbon-rich substance burned for fuel. The coal with the richest carbon content is:

  anthracite.

The burning of biomass emits CO2 but does not add to the total carbon dioxide in the biosphere. That fact is expressed in the concept of:

  carbon neutrality.

Which of these “rare earth” minerals is crucial to the construction of cheap and effective solar panels?

  Tellurium

The first law of thermodynamics, also called the __________ law, informs us that the total energy of the universe is constant.

  conservation

What is the major downside of geothermal energy?

  It is site-specific.

Among the sources of renewable energy, percentage wise, __________ tops the list.

  biomass

Which of the following carbon-rich compounds comes out of the Earth as a liquid?

  Crude oil

Which vital rare earth mineral is only easily extracted from briny pools located in the Andes?

  Lithium

Regarding solar power, the fact that sunlight is not directly available at night or when the sky is cloudy is referred to as the __________ problem.

  intermittency

Gordon and Gloria are discussing the negative side effects of biomass utilization. Gordon maintains that the worst problem occurs when there is insufficient heat generated by biomass burning to fully neutralize toxins, which adds to air pollution. Gloria maintains that the worst side effect comes from growing row crops like corn and soy for biofuel production because farmers are deprived of arable land needed for growing food. According to your reading, who is correct?

  Gloria is correct.

Respecting energy efficiency, the number of steps required to go from an energy source, like gasoline, to the amount of work performed, as in driving a car, is __________ reduced.

  proportionally

In general, heat amounts to the vibration of __________ such that increasing vibrations register as increasing heat.

  molecules

Regarding hydroelectric power, all of the following are true EXCEPT:

  the main energy source is the mechanical energy of moving water.

Which of these kinds of energy is a fundamental requisite for life on Earth?

  Solar energy

All of the following are secondary problems related to wind power EXCEPT:

  windy areas are many miles distant from cities where demand for power is high.

According to your reading material, wind power capacity in the United States has increased by:

  30 percent.

In basic terms, a joule is a unit of work relative to time and a watt is the equivalent of one __________ per second.

  joule

If you want to move to a U.S. state where you could live near a geothermal power plant, you could choose any of the following EXCEPT:

  South Carolina.

Regarding nuclear power, which statement is correct?

  Barring accidents, nuclear power plants do not emit atmospheric pollutants.

In scientific terms, when you drink a diet cola that contains 1.5 calories, you’ve actually consumed __________ kilocalories.

  0.0015

There are three stages in the combustion of gas in an internal combustion engine. They are (1) combustion, (2) thermal energy and (3) __________ energy.

  mechanical



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