Topics 6.9 & 6.10 (Schultz)

Many environmentalists consider Egypt's Aswan High Dam on the Nile River to be an ecological disaster. Which of the following is the best evidence to support this viewpoint?

• Creation of the dam flooded important archaeological sites.

• Sardine populations near the Nile delta increased exponentially as a result of decreased annual rates of water flow.

• The Aswan High Dam supplies one-third of the electrical power used in Egypt.

• Some countries upstream from the dam have diverted Nile River water for their own projects.

• Most of the nutrient-rich silt that the Nile annually deposited downstream is now deposited behind the dam.

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NGSS.MS-ESS3-4

NGSS.MS-LS2-4

Economic benefits of building large dams include which of the following?

I. Storage of water for agriculture and domestic use

II. Controlling floods upstream

III. Production of renewable energy

• I only

• II only

• I and III only

• I and II only

• I, II and III

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NGSS.MS-ESS2-4

Which of the following will be the most likely consequence from the daily operation of a typical hydroelectric power plant?

• Greenhouse gases will be released during the generation of electricity.

• The frequency of floods will increase downstream of the hydroelectric dam project.

• Beach erosion will increase where the river meets the ocean downstream from the hydroelectric dam project.

• The population of fish that migrate to areas upstream of the hydroelectric dam project to breed will increase.

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NGSS.MS-ESS3-3

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of the following is an unintended consequence of the use of hydroelectric dams for electricity generation?

• Greenhouse gases will be released from the hydroelectric dam during the generation of electricity.

• The frequency of floods will increase downstream from the hydroelectric dam.

• There will be more erosion than sediment deposition downstream from the hydroelectric dam.

• The population of fish that migrate to areas upstream from the hydroelectric dam to breed will increase.

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NGSS.MS-ESS3-3

NGSS.MS-LS2-5

Which of the following is the most successful solution to the problem of fish mortality caused by dams?

• Placing fish repellents on dam turbines

• Eliminating keystone species above the dam

• Building fish ladders around the dam

• Harvesting the fish before they reach the dam

• Dredging the sediments upstream of the dam

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NGSS.MS-ETS1-2

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of the following best describes a disadvantage of geothermal energy production?

• Geothermal energy production is a significant source of noise pollution.

• Geothermal energy implementation in homes and businesses has a high upfront cost, and electricity is needed to operate pumps.

• Geothermal energy generation costs remain stable when gas and oil prices increase.

• Geothermal energy is weather dependent and can be generated only at certain times of the year.

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NGSS.HS-ESS3-2

NGSS.HS-ETS1-3

Which of the following statements about geothermal energy is accurate?

• While geothermal energy can heat buildings directly, it is not used to generate electricity.

• The location of geothermal energy sources ranges from short distances below ground to miles below the surface.

• Steam from underground sources must be condensed before it can be used aboveground.

• In some parts of the world, geothermal sources are used to power steam locomotives.

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NGSS.MS-PS3-4

Geothermal energy plants are a viable alternative energy source because they

• use the heat from Earth’s interior to create steam that is used to generate electricity and then can be pumped back into the ground

• can be built for use in any location where surface drilling is possible and construction of geothermal plants increases land stability

• use the heat from Earth’s interior to directly heat buildings and houses and give off no greenhouse gasses

• do not give off hazardous air pollutants into the atmosphere and require very little water

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NGSS.MS-PS3-3