The guiding questions for this activity are,“How do vibrations cause sound and how can you change the pitch of the sound?" Sound is a wave produced by vibrating air. Students will make a bug buzzer and discover that changing the speed at which you spin the bug buzzer produces a different pitch. Before beginning this activity, we recommend you read Chapters 9 and 11 which are in this book selection. Chapter 9 is an overview of the section and introduces the format used to present ideas for Family Science Night activities. Chapter 11 features activities that we believe to be at an intermediate level. A materials list, references, safety notes, standards, and teacher background information are provided. This book selection also includes the Table of Contents, Preface, Acknowledgments, About the Authors, Introduction, and Index..