Title: Define energy efficiency.
Course: Energy Demand: Sustainability and Efficiency (20901-II) > Section: Exploring Sustainability and Efficiency

Definition should include

- inputs and outputs (the importance of getting more output from less input)
- physical limitations of various technologies and energy sources
- the relationship between efficiency and sustainability.

Process/Skill Questions:

- How are efficiency and sustainability related? What is an example of a situation where an increase in efficiency does not lead to greater sustainability?
- What are different types of light bulbs? How and why do their efficiencies differ?