Energy Production and Usage
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AP Environmental Science › Energy Production and Usage
Which of the following is NOT a drawback of utilizing hydrogen as a fuel source?
Hydrogen has a low energy density by weight.
Hydrogen has a low energy density by volume.
Hydrogen is very challenging and dangerous to transport.
The input of energy to produce hydrogen is often greater than the energy of the resulting hydrogen.
Existing infrastructure for manufacturing and transporting hydrogen is minimal to nonexistent.
Explanation
Hydrogen is very challenging to transport and it requires a large energy investment to produce it. While hydrogen has a low energy density by volume, it actually has a very high energy density by weight. This has to do with the fact that hydrogen, discussed in this context, is a gas.
Which of the following is NOT an adverse affect of building dams to generate hydro-electric power?
The energy required to operate and maintain the dam is often equal to the energy produced by the dam.
Dams often change the current and width of a watershed, altering the riparian ecosystem.
Many fish populations (including salmon and trout) are decimated because dams restrict access to essential habitat.
Dams can contribute to flooding and resulting property damage.
Animals that rely on fish as sustainance may begin to decline because the dam has permanently altered fish habitat.
Explanation
The energy output from a hydro-electric dam is substantial enough to result in most of America's major rivers being damned. The more pressing issues that these damns cause are changes to the aquatic ecosystem and restriction of movement for migratory fish species.
At the current rate of consumption, available natural gas reserves are expected to last another:
75 years
50 years
25 years
600 years
100 years
Explanation
Currently available natural gas reserves are expected to last another 75 years at the current rate of consumption.
At the current rate of consumption, available natural gas reserves are expected to last another:
75 years
50 years
25 years
600 years
100 years
Explanation
Currently available natural gas reserves are expected to last another 75 years at the current rate of consumption.
Which of the following is NOT an adverse affect of building dams to generate hydro-electric power?
The energy required to operate and maintain the dam is often equal to the energy produced by the dam.
Dams often change the current and width of a watershed, altering the riparian ecosystem.
Many fish populations (including salmon and trout) are decimated because dams restrict access to essential habitat.
Dams can contribute to flooding and resulting property damage.
Animals that rely on fish as sustainance may begin to decline because the dam has permanently altered fish habitat.
Explanation
The energy output from a hydro-electric dam is substantial enough to result in most of America's major rivers being damned. The more pressing issues that these damns cause are changes to the aquatic ecosystem and restriction of movement for migratory fish species.
At the current rate of consumption, available natural gas reserves are expected to last another:
75 years
50 years
25 years
600 years
100 years
Explanation
Currently available natural gas reserves are expected to last another 75 years at the current rate of consumption.
Which of the following is NOT a drawback of utilizing hydrogen as a fuel source?
Hydrogen has a low energy density by weight.
Hydrogen has a low energy density by volume.
Hydrogen is very challenging and dangerous to transport.
The input of energy to produce hydrogen is often greater than the energy of the resulting hydrogen.
Existing infrastructure for manufacturing and transporting hydrogen is minimal to nonexistent.
Explanation
Hydrogen is very challenging to transport and it requires a large energy investment to produce it. While hydrogen has a low energy density by volume, it actually has a very high energy density by weight. This has to do with the fact that hydrogen, discussed in this context, is a gas.
Which of the following is NOT a drawback of utilizing hydrogen as a fuel source?
Hydrogen has a low energy density by weight.
Hydrogen has a low energy density by volume.
Hydrogen is very challenging and dangerous to transport.
The input of energy to produce hydrogen is often greater than the energy of the resulting hydrogen.
Existing infrastructure for manufacturing and transporting hydrogen is minimal to nonexistent.
Explanation
Hydrogen is very challenging to transport and it requires a large energy investment to produce it. While hydrogen has a low energy density by volume, it actually has a very high energy density by weight. This has to do with the fact that hydrogen, discussed in this context, is a gas.
Which of the following is NOT an adverse affect of building dams to generate hydro-electric power?
The energy required to operate and maintain the dam is often equal to the energy produced by the dam.
Dams often change the current and width of a watershed, altering the riparian ecosystem.
Many fish populations (including salmon and trout) are decimated because dams restrict access to essential habitat.
Dams can contribute to flooding and resulting property damage.
Animals that rely on fish as sustainance may begin to decline because the dam has permanently altered fish habitat.
Explanation
The energy output from a hydro-electric dam is substantial enough to result in most of America's major rivers being damned. The more pressing issues that these damns cause are changes to the aquatic ecosystem and restriction of movement for migratory fish species.
Which of the following is NOT a drawback of utilizing hydrogen as a fuel source?
Hydrogen has a low energy density by weight.
Hydrogen has a low energy density by volume.
Hydrogen is very challenging and dangerous to transport.
The input of energy to produce hydrogen is often greater than the energy of the resulting hydrogen.
Existing infrastructure for manufacturing and transporting hydrogen is minimal to nonexistent.
Explanation
Hydrogen is very challenging to transport and it requires a large energy investment to produce it. While hydrogen has a low energy density by volume, it actually has a very high energy density by weight. This has to do with the fact that hydrogen, discussed in this context, is a gas.