Question

As climate change has become a more looming threat, many countries are shifting to various sources of "clean energy." For example, Scotland generated enough wind energy in the first half of 2019 to power two Scotlands. Wind energy is usually harnessed through the use of wind turbines, as shown in the figure below. How does this become usable energy to power a country like Scotland? A) The potential energy of the wind is converted into electrical energy that we use. B) The kinetic energy of the wind is converted into chemical energy that we use. C) The kinetic energy of the wind is converted into electrical energy that we use. D) The static electricity in the wind is harnessed and accumulates until there is enough to use.

Answer 1

The kinetic energy can be harnessed; much like some hydropower technologies harness water movement. A way to convert this kinetic energy into electric energy is through piezoelectricity. By applying a mechanical stress to a piezoelectric crystal or material an electric current will be created and can be harvested.

Answer: C