When water falls through a dam and turns a turbine connected
to a generator, electricity is produced. This electricity is often
used to light our homes and offices. Which of the following
shows the energy transformations that occur?
A
Electrical → light → mechanical
B
Chemical → mechanical → electrical
C
Mechanical → chemical → light
D
Mechanical → electrical → light

Answer :

Answer:

The energy transformations that occur is Mechanical → electrical → light.

Explanation:

  • When the water falls through the dam the gravitational potential energy of water is transformed into kinetic energy.
  • This energy rotates the turbine (mechanical energy) connected to a generator.
  • Now this mechanical energy is converted into electrical form through the process of electromagnetic induction (when a conductor cuts the magnetic field, electricity is produced).
  • The electricity thus produced is driven to different offices and houses through wires.
  • By drawing this current we light our homes and offices.

Energy can not be created nor be destroyed can transfer from one form to another form. Option D is correct. The order of the energy transformation will be mechanical → electrical → light.

What are energy transformations?

The transformation of energy from one form to another is known as energy transformation. Energy can not be created nor be destroyed can transfer from one form to another form.

The energy conversion is done step by step as follows;

When waterfalls through the dam.

1. gravitational potential energy ⇒  kinetic energy

Then the turbine rotates due to the kinetic energy

Mechanical energy ⇒ electrical energy

Then we use the electric energy in the different sectors;

electrical  ⇒ light

The order of the energy transformation will be mechanical → electrical → light.

Hence Option D is correct.

To learn more about the energy transformations refer to the link;

https://brainly.com/question/8589998

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