Download or read book Language, Literacy and Vocabulary - Reading Expeditions (Physical Science): Magnets written by National Geographic Learning and published by National Geographic Society. This book was released on 2007-03-21 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Learn about magnetism and how this invisible force makes objects move. Discover why many scientists think Earth's magnetism guides loggerhead sea turtles on their journey through the Atlantic Ocean"--Publisher's website.