PURPOSE AND PERSPECTIVE OF THE CHAPTER The purpose of this chapter is to examine the fundamental concepts of energy. As discussed in the chapter energy is a basic concept in all science and engineering disciplines. The concept of energy conservation has also been explained in the chapter. Efforts of energy conservation usually concentrate on either change to technology or lifestyle. Increased emphasis on energy conservation is explained with the help of some convincing arguments. Students should learn that the use of our energy resources is one of the major factors affecting the environment. Using energy resources may impact the environment, but so can extracting those resources, such as through deforestation, oil spillage, forest fires, and destruction of the natural landscape and vegetation. Later in the chapter, the worldwide consumption of energy is explained with the help of graphs. Recall from the beginning of this chapter that energy is not an end in itself but is valued for what we can do with it. The end uses of energy are traditionally broken down into four sectors: transportation, industrial, residential, and commercial. Students should learn about energy resources, their limitations, and their uses. Students must know how large each energy resource is and how long it will last. Both of these questions are difficult to answer because we must make assumptions about future technologies for the extraction of resources, future fuel prices, and consumption growth rates. Understanding energy use means also understanding the consequences of its use. This chapter will introduce you to the science of energy use and energy technology. [return to top] LIST OF STUDENT DOWNLOADS Students should download the following items from the Student Companion Center to complete the activities and assignments related to this chapter:  PowerPoint (PPTs)  Instructor Manual CHAPTER OBJECTIVES The following objectives are addressed in this chapter: CO1 Explain the basic concept of energy. CO2 Describe the conservation of energy and technical, lifestyle changes. CO3 Explain the uses of energy and major factors affecting the environment.