Question

A windmill is used to create electrical energy.

This change from one form of energy to another (wind to electric) is called:

A. Energy transformation
B. Kinetic energy
C. Mechanical energy
D. Electrical energy

Answer 1

The conversion of wind energy to electrical energy through a windmill is known as Energy transformation, where kinetic energy is transformed to mechanical energy, and then into electrical energy by an electric generator.

Step-by-step explanation:

The change from wind energy to electrical energy through the use of a windmill is known as Energy transformation. This process occurs when kinetic energy, which is present in the moving air, is captured by the windmill's blades, causing them to spin. The rotational motion of the blades turns a shaft, which then operates an electric generator. The generator is where the actual energy transformation occurs; it converts the mechanical energy of the spinning shaft into electrical energy, which can then be used to power electrical devices.

Analogous to this process, hydroelectric power converts gravitational potential energy of water into kinetic energy, and subsequently into mechanical work to run electric generators. Similarly, an electric motor transforms electrical energy into mechanical energy, not the other way around as an electric generator does.

Answer 2

The conversion of wind energy into electrical energy via a windmill is an example of Energy Transformation. This is achieved through the kinetic energy of wind turning turbines, which then power a generator to produce electricity. (Option A),

Step-by-step explanation:

The process of a windmill converting wind energy into electrical energy is known as Energy Transformation. This transformation happens when the kinetic energy of the wind turns the blades of a turbine, which is connected to an electric generator.

The relative motion between magnets and coils of wire within this generator creates electricity, thereby converting mechanical energy into electrical energy.

This process is reminiscent of how hydroelectric installations turn kinetic energy into work by using turbines and generators, as well as how an electric motor (which actually transforms electrical energy into mechanical energy) operates in reverse. (Option A),