Question 2SavedSelect the option that best completes the following sentence. If the Three Gorges Dam's reservoir was not constantly replenished from upstream its level would fall as power was generated. A low water level in the reservoir indicates:increased potential energydecreased potential energyincreased kinetic energydecreased kinetic energy
Question
Question 2SavedSelect the option that best completes the following sentence. If the Three Gorges Dam's reservoir was not constantly replenished from upstream its level would fall as power was generated. A low water level in the reservoir indicates:increased potential energydecreased potential energyincreased kinetic energydecreased kinetic energy
Solution
The correct answer is "decreased potential energy".
Here's why:
-
Potential energy is the energy stored in an object due to its position relative to other objects. In the case of a dam, the water stored in the reservoir has potential energy because of its height above the turbines.
-
When the dam generates power, it converts this potential energy into kinetic energy. The water falls from the reservoir, through the turbines, and its potential energy decreases while its kinetic energy increases.
-
If the water level in the reservoir falls and is not replenished, there is less water at a height, which means there is less potential energy stored.
So, a low water level in the reservoir indicates decreased potential energy.
Similar Questions
If the Three Gorges Dam's reservoir was not constantly replenished from upstream its level would fall as power was generated. A low water level in the reservoir indicates:
State the form of energy that is transformed into kinetic energy in a hydro dam. Electrical Energy1Gravitational Potential Energy2Nuclear Energy3Heat Energy4
Water near the dam's intake pipes has the weight of all the water above pressing down on it, so the water is forced into the intake pipes.Determine which of the following are true. The higher the water level in the reservoir the greater the kinetic energy of the water flowing down the intake pipesThe higher the water level in the reservoir the greater the speed of the water flowing in the intake pipesThe reservoir water level makes no difference to the kinetic energy of the water in the intake pipesThe higher the water level in the reservoir the lower the kinetic energy of the water flowing in the intake pipes
Water behind a dam has a certain amount of stored energy that can be released as the water falls over the top of the dam. It may be enough energy to turn a mill wheel or an electricity-generating turbine. Choose the term that best describes the type of energy stored in the water at the top of the dam.Group of answer choicesChemicalPotentialKineticRadiant
In a hydroelectric power plant more electricalpower can be generated if water falls from agreater height because(1) its temperature increases(2) larger amount of potential energy isconverted into kinetic energy(3) the electricity content of water increaseswith height(4) more water molecules dissociate into ions
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.