Asked by Danielle Marie on May 17, 2024
Verified
Which of the following is NOT an advantage associated with hydroelectric dams?
A) the amount of electricity can be changed rapidly
B) there are no emissions of greenhouse gases or toxic contaminants
C) the dam traps sediment that otherwise would be transported down the river
D) the main source of energy, gravity, is free
Hydroelectric Dams
Structures built across rivers to control water flow and generate electricity through the movement of water through turbines.
Greenhouse Gases
Gases in Earth's atmosphere that trap heat, including carbon dioxide and methane, contributing to global warming and climate change.
Sediment
Particles of rock, organic material, or minerals that are transported and deposited by wind, water, or ice, often forming sedimentary layers.
- Summarize the environmental gains and difficulties presented by hydroelectric dams.
Verified Answer
PG
Pierre GerlenskeyMay 18, 2024
Final Answer :
C
Explanation :
Hydroelectric dams trapping sediment that would otherwise be transported down the river is considered a disadvantage, not an advantage. This sediment buildup can disrupt ecosystems, reduce the dam's efficiency over time, and affect water quality and flow downstream.
Learning Objectives
- Summarize the environmental gains and difficulties presented by hydroelectric dams.