Discusses how to stop a spinning object (such as rotating fan blades) by humming and the perception of curious blue arcs around a light. Background information, relevant research, and activities related to these two topics are provided. (JN)

Describes a student investigation of a reverse flame in a atmosphere of methane that won second place in the physics division of the International Science and Engineering Fair. Includes a discussion of falling and fracturing behavior, specifically dealing with chimneys, trees, pencil point, stirring rods, and chalk. (BT)

Discusses various physics concepts/principles that can be illustrated by amusement park rides. Examples of rotational dynamics, energy conservation, acceleration, and others can be demonstrated by such rides as roller coasters, Ferris wheels, and a variety of rotating rides. (JN)

Water striders are insects that walk and run on the surface of water. Discusses the morphology, physiology, and behavior of these insects. Includes diagrams of stages in the movement of a typical strider. (JN)

Describes an investigation of forces and motions in ten pin bowling. Explores the significance of the spin on the ball, its curved path and other factors which may increase the chance of a strike occurring. Discusses the ball's path and the action of the pins. (CW)