http://www.ck12.org Chapter 17. Introduction to Energy
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URL: http://www.ck12.org/flx/render/embeddedobject/116510Lesson Summary
- Nonrenewable resources are natural resources that are limited in supply and cannot be replaced except over
millions of years. They also release pollutants and contribute to global climate change. Nonrenewable energy
resources include fossil fuels, which are burned, and uranium, which is used for nuclear fission. - Renewable resources are natural resources that can be replaced in a relatively short period of time or are
virtually limitless in supply. They cause little if any pollution or global climate change. Renewable energy
resources include sunlight, moving water, wind, biomass, and geothermal energy. - Fossil fuels provide most of the energy used worldwide. Richer nations use far more energy resources,
especially fossil fuels, than poorer nations do. There are several ways that people can conserve energy in
their daily lives.
Lesson Review Questions
Recall
- What is a natural resource?
- Identify three fossil fuels.
- Describe how fossil fuels form.
- What are drawbacks of using fossil fuels?
- State why nuclear energy is a nonrenewable resource.
Apply Concepts
- Create a Web page or poster that encourages people to conserve energy and gives tips for how to do it.
Think Critically
- Compare and contrast nonrenewable and renewable energy resources.
- Argue for the use of any two renewable energy resources.
Points to Consider
In this chapter, you read that energy is transferred when work is done. You also read about thermal energy.
- You can use the thermal energy of a stove to cook food. How is thermal energy transferred from the hot
stovetop to a pot on the stove?