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Energy 101: Wind Turbines
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This video provides a simple introduction to wind turbines and how they generate electricity.
Disciplinary Core Ideas
Criteria and constraints also include satisfying any requirements set by society, such as taking issues of risk mitigation into account, and they should be quantified to the extent possible and stated in such a way that one can tell if a given design meets them.
At the macroscopic scale, energy manifests itself in multiple ways, such as in motion, sound, light, and thermal energy.
Although energy cannot be destroyed, it can be converted to less useful forms—for example, to thermal energy in the surrounding environment.
When evaluating solutions it is important to take into account a range of constraints including cost, safety, reliability and aesthetics and to consider social, cultural and environmental impacts.
Resource availability has guided the development of human society.
All forms of energy production and other resource extraction have associated economic, social, environmental, and geopolitical costs and risks as well as benefits. New technologies and social regulations can change the balance of these factors.
Humanity faces major global challenges today, such as the need for supplies of clean water and food or for energy sources that minimize pollution, which can be addressed through engineering. These global challenges also may have manifestations in local communities.
Energy cannot be created or destroyed, but it can be transported from one place to another and transferred between systems.
The availability of energy limits what can occur in any system.
Changes of energy and matter in a system can be described in terms of energy and matter flows into, out of, and within that system.
Energy cannot be created or destroyed—it only moves between one place and another place, between objects and/or fields, or between systems.
The transfer of energy can be tracked as energy flows through a designed or natural system.
Energy may take different forms (e.g. energy in fields, thermal energy, energy of motion).