A group of wind turbines operates in an open field. Which statement about the wind turbines is true?
Answer
A.
The wind turbines produce movement of air that does work.
B.
The wind turbines do work by using electricity to produce power.
C.
The wind turbines cannot do work because they are fixed in one spot.
D.
The wind turbines do work generating electricity by harnessing wind energy.
the correct answer is
D.The wind turbines do work generating electricity by harnessing wind energy
D. The wind turbines do work generating electricity by harnessing wind energy.
To evaluate which statement about the wind turbines is true, let's break down each option:
A. The wind turbines produce movement of air that does work.
B. The wind turbines do work by using electricity to produce power.
C. The wind turbines cannot do work because they are fixed in one spot.
D. The wind turbines do work generating electricity by harnessing wind energy.
To determine the correct answer, we need to understand how wind turbines operate and produce energy.
Wind turbines are designed to convert the kinetic energy of the wind into electric power. As the wind blows, it causes the turbine's blades to rotate. This rotational motion is then transferred to an electric generator, which converts it into electrical energy.
Option A states that the wind turbines produce movement of air that does work. While wind turbines do cause the movement of air, this is not considered work in the scientific sense. Instead, the primary focus is on the work done by the turbines themselves.
Option B states that wind turbines do work by using electricity to produce power. This statement is incorrect because electricity is the output of wind turbines, not the input.
Option C states that wind turbines cannot do work because they are fixed in one spot. This statement is inaccurate as wind turbines certainly do work. They convert the kinetic energy of the wind into electrical energy, which is a form of work.
Option D correctly states that wind turbines do work by generating electricity using wind energy. Wind turbines harness the energy from the wind and convert it into electricity, which can be used to power homes, businesses, and other electrical devices.
Therefore, the correct answer to the question is option D: The wind turbines do work generating electricity by harnessing wind energy.