Introduction to TechnologyChapter 7:
Energy and Power for TechnologyChapter SummariesSection 7.1
Energy is the ability to do work, and power is the measurement of work done. Renewable energy sources come from plants and animals. Nonrenewable sources of energy come from plants and animals. Unlimited sources of energy include solar, wind, hydro, and geothermal energy. Section 7.2
Power is measured when energy is converted from one form to another. All power systems include a source of energy, a process, and an output load. Section 7.3
Burning fuels produces serious threats to our health and environment, including the greenhouse effect, global warming, acid rain, and carbon monoxide. We can help control pollution by making everyone aware of the problems. We can reduce the amount of pollution that enters our environment, and we can develop more and better ways of conserving energy.  | 
