Textbook in PDF format

From the sun to wind power, from nuclear plants to electricity, energy is an amazing resource that powers our world. Discover the fascinating story of energy and what it is with DK Eyewitness Books: Energy.
Applying the award-winning Eyewitness formula to one of the most compelling subjects in the world of science, this title profiles every facet of energy, from the scientists who uncovered its amazing secrets to the impact it has on every aspect of our lives. Learn about how plants convert sunlight into energy through photosynthesis and explore how energy has opened up lines of communication from morse code and telegraphs to GPS and communication satellites.
Featuring more than 180 stunning photographs that help explain what energy is and how it affects our lives, DK Eyewitness Books: Energy helps bring the fascinating story of one of our most valuable resources to life.
Each revised Eyewitness book retains the stunning artwork and photography from the groundbreaking original series, but the text has been reduced and reworked to speak more clearly to younger readers. Still on every colorful page: Vibrant annotated photographs and the integrated text-and-pictures approach that makes Eyewitness a perennial favorite of parents, teachers, and school-age kids.
Surveys various sources of energy and the ways in which they've been harnessed