Will a magnet pick up a paper clip or a feather? The answer is, just the paper clip. Magnets only pick up things that contain bits of iron. In this new addition to the Let's-Read-and-Find-Out Science series, veteran author Franklyn Branley explains the properties and behavior of magnets. True Kelley's charming illustrations will entertain readers as they discover for themselves what makes a magnet. Hands-on activities include making a magnet and compass.
This second edition is updated and streamlined to make learning electrical and electronic systems easy. At the request of service technicians and instructors form throughout the United States and Canada, information on computer sensors, high-intensity discharge (HID) headlights, antilock breaks, OBD ll, and digital meter usage have been included. A sample, ASE-style test is included in the appendix.