Question 1

For the residents of Samsø,one of the first conservation efforts revolved around ___________.

Accepted Answer

A)  cooling homes
B)  heating homes
C)  converting to electric cars
D)  using geothermal power
E)  using hydropower B

Question 2

What makes solar energy an unreliable energy source?

Accepted Answer

A)  Photovoltaic cells have a lot of moving parts that produce noise.
B)  Sunlight is intermittent,especially in high-latitude locations.
C)  It has expensive start-up costs.
D)  All of these answers are correct.
E)  Sunlight is intermittent and solar energy has expensive start-up costs. E

Question 3

Refer to Infographic 3.What is the correct order of the steps used to generate electricity in a wind turbine? I.Rotating blades turn a shaft inside the turbine.
II)A spinning generator produces electrical current.
III)Wind turns turbine blades.
IV)The shaft is attached to a higher-speed gear that turns the generator.

Accepted Answer

A)  I,III,IV,II
B)  I,II,III,IV
C)  III,II,I,IV
D)  III,I,IV,II
E)  II,IV,I,III D

Question 4

What is an advantage of solar energy you would use in your talk?

Accepted Answer

A)  It is unpredictable and intermittent.
B)  It is effective at large and small scales.
C)  It has to be paired with other energy sources to meet needs.
D)  It is expensive compared to other renewable energy sources.

Question 5

Explain why wind and water energy sources are considered an indirect form of solar energy.

Accepted Answer

The answer of Explain why wind and water energy sources...

Question 6

The people of Samsø discovered the best way to achieve energy independence is to____??________.

Accepted Answer

A)  use solar energy
B)  use wind energy
C)  conserve energy
D)  use geothermal energy
E)  buy electric cars

Question 7

Which renewable resource supplies more electricity to the human population than any other single renewable resource?

Accepted Answer

A)  solar energy
B)  wind
C)  geothermal energy
D)  biomass
E)  hydropower

Question 8

Which energy sources will see the biggest increases as costs decline for the technologies?

Accepted Answer

A)  wind and hydropower
B)  wind and solar
C)  solar and geothermal
D)  solar and hydropower
E)  hydropower and geothermal

Question 9

The president wants to know which type of renewable energy source supplies more electricity than any other single renewable resource.You tell him the answer is ________.

Accepted Answer

A)  hydroelectric
B)  solar
C)  biomass
D)  geothermal

Question 10

Which step costs money but has a quick payback time?

Accepted Answer

A)  turning off the computer when not in use
B)  replacing old light bulbs with energy-efficient LED bulbs
C)  replacing older windows with high efficiency windows
D)  lowering the thermostat on the water heater
E)  taking short showers instead of baths

Question 11

How do geothermal power plants work?

Accepted Answer

A)  They actively move heat from underground into an overlying structure in order to remove or add heat to the structure.
B)  They utilize steam released from hydrothermal reservoirs to spin turbines and produce electricity.
C)  They use the heat from hot rocks located in earthquake zones to heat coal.
D)  They use heat from volcanic eruptions to boil water and create steam that can power a turbine.
E)  They funnel hot steam into people's homes so that it can be used as a heat source.

Question 12

Science Literacy Use Infographic 2 to answer the next five questions. 
-How much electricity,in billion kWh,is hydroelectric power expected to generate in 2040?

Accepted Answer

A)  500
B)  400
C)  300
D)  100
E)  50

Question 13

Why does a run-of-the-river hydroelectric system have less impact on aquatic systems than a giant dam?

Accepted Answer

The answer of Why does a run-of-the-river hydroelectric system have...

Question 14

What are the differences between active solar approaches and passive solar approaches?

Accepted Answer

The answer of What are the differences between active solar...

Question 15

Which of the following converts the energy of the Sun directly into heating?

Accepted Answer

A)  photovoltaic cells
B)  wind turbines
C)  biomass
D)  solar thermal systems

Question 16

Turning off lights when you leave a room or switching to CFL or LED lighting is an effective conservation method because lighting usually accounts for ___________ of average home electrical costs.

Accepted Answer

A)  45%
B)  50%
C)  25%
D)  10%
E)  35%

Question 17

The earliest renewable energy source used by humans was ___________.

Accepted Answer

A)  biomass
B)  solar
C)  wind
D)  geothermal
E)  hydropower

Question 18

In 2016,how much energy used by the human population came from renewable resources?

Accepted Answer

A)  3%
B)  9%
C)  15%
D)  25%
E)  40%

Question 19

Why is the unit barrels of oil equivalents (BOE)used in examining energy patterns?

Accepted Answer

The answer of Why is the unit barrels of oil...

Question 20

What is the relationship between the wind turbines and the automobiles used on Samsø?

Accepted Answer

A)  They drive only electric cars.
B)  They drive only cars produced on the island by wind power.
C)  The clean energy produced by the turbines offsets the fossil fuels used by the cars.
D)  The cars run on wind power.
E)  There is no relationship between the cars and the wind turbines.

Exam 31: Sun, Wind, Water, and Earth Energy Fueled by the Sun