social impact of tech 1

Question 1 (5 points)

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

Question 1 options:

a)

Mechanical

b)

Chemical

c)

Solar

d)

Electrical

Question 2 (5 points)

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

Question 2 options:

a)

Tellurium

b)

Platinum

c)

Celestite

d)

Lithium

Question 3 (5 points)

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

Question 3 options:

a)

Wind

b)

Solar

c)

Hydroelectric

d)

Biomass

Question 4 (5 points)

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

Question 4 options:

a)

locals may be annoyed by the noise generated by wind farms.

b)

wind farm location can have a negative impact on local wildlife.

c)

wind farms sometimes spoil the beauty of natural landscapes.

d)

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

Question 5 (5 points)

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

Question 5 options:

a)

intermittency

b)

distributive

c)

interference

d)

variability

Question 6 (5 points)

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?

Question 6 options:

a)

Both Students 1 and 2 are correct.

b)

Neither Student 1 nor 2 are correct.

c)

Only Student 1 is correct.

d)

Only Student 2 is correct.

Question 7 (5 points)

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

Question 7 options:

a)

heat

b)

mechanical

c)

chemical

d)

solar

Question 8 (5 points)

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

Question 8 options:

a)

additive

b)

conservation

c)

absolute

d)

conversion

Question 9 (5 points)

How many calories in a kilocalorie?

Question 9 options:

a)

10

b)

100

c)

1,000

d)

1,000,000

Question 10 (5 points)

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

Question 10 options:

a)

exchange

b)

production

c)

neutrality

d)

replacement

Question 11 (5 points)

Which statement is false as regards hydroelectric power?

Question 11 options:

a)

Hydroelectric power reduces overall greenhouse emissions.

b)

Initial costs of construction are high, but operating costs are low.

c)

Hydroelectric plants may obstruct fish and wildlife migration.

d)

Mechanical energy is the main product of hydroelectric plants.

Question 12 (5 points)

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

Question 12 options:

a)

lignite

b)

sub-bituminous

c)

bituminous

d)

anthracite

Question 13 (5 points)

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

Question 13 options:

a)

reduce

b)

equalize

c)

increase

d)

decrease

Question 14 (5 points)

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

Question 14 options:

a)

kinetic

b)

potential

c)

provisional

d)

mechanical

Question 15 (5 points)

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?

Question 15 options:

a)

Both Students 1 and 2 are correct.

b)

Both Student 1 and 2 are incorrect.

c)

Only Student 2 is correct.

d)

Only Student 1 is correct.

Question 16 (5 points)

Which sector has consistently used the greatest percentage of energy in the United States?

Question 16 options:

a)

Industrial

b)

Commercial

c)

Residential

d)

Transportation

Question 17 (5 points)

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

Question 17 options:

a)

provisional

b)

experimental

c)

theoretical

d)

estimated

Question 18 (5 points)

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

Question 18 options:

a)

Nuclear energy

b)

Natural gas

c)

Hydropower

d)

Coal

Question 19 (5 points)

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

Question 19 options:

a)

transportation

b)

industrial

c)

commercial

d)

residential

Question 20 (5 points)

Which statement regarding nuclear fission is true?

Question 20 options:

a)

The cost of building a nuclear power plant is high.

b)

Core meltdowns generally don’t impact the surrounding population.

c)

Nuclear power plants release as much pollution as coal and oil during normal operation.

d)

Nuclear plants produce less than one ton of toxic nuclear waste annually, on average.
 
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