Question

Unit 2 & 3: Energy Test
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Question
Possible Points: 1
The image below shows the basic construction of a hydroelectric dam. A student claims that the type of energy transformation that occurs in this system is mechanical to electrical.


image f5dad45c4b04427585e70a7062cdbdd7

Which of the following statements would best support the student's claim?

Responses

Water must flow from a higher place to a lower one for electricity to be created.
Water must flow from a higher place to a lower one for electricity to be created.

Electricity must move to travel through power lines and reach people’s homes.
Electricity must move to travel through power lines and reach people’s homes.

The electricity flowing through the power lines has enough energy to move objects.
The electricity flowing through the power lines has enough energy to move objects.

The turbine must turn for electricity to flow from the generator to the power lines.

Answer 1

The statement that would best support the student's claim that the type of energy transformation in a hydroelectric dam is mechanical to electrical is:

**The turbine must turn for electricity to flow from the generator to the power lines.**

This statement highlights the transformation process whereby the mechanical energy from the flowing water is used to turn the turbine, which then generates electrical energy.