Bounce Ball: Interactive Air Pressure Exhibit for Science Museums

I. Purpose of the Exhibit

The exhibit provides an interactive experience. It enhances understanding of air pressure principles and applications. Using a U-shaped pipe device, participants observe air pressure launching a tennis ball. The exhibit makes air pressure tangible. It promotes better understanding of its principles.

II. Display Content, Mode, and Performance Form

The exhibition item includes several components. It has a U-shaped pipe device, a bowling ball, and a tennis ball. It also includes a pulling rope, a ball net, and a tablet computer.

The U-shaped pipe has different diameters at each end. The larger end holds the bowling ball. It connects to a rope that can be pulled upward. The smaller end contains the tennis ball. It sits under a funnel-shaped ball net.

During interaction, participants pull the rope. This raises the bowling ball. When released, the bowling ball falls. It compresses the air inside the U-shaped pipe. Compressed air flows from the larger end to the smaller end. Air pressure increases inside.

When pressure becomes sufficient, it propels the tennis ball upward. The tennis ball rises against its own weight. A conical ball net catches it. This resets the ball for the next shot.

The exhibit includes a tablet computer. It has an electronic instruction board and graphic panels. Participants can access information about operation. They learn experience methods and scientific principles. This enhances their overall experience.

III. Operation Instructions and Experience Mode

Participants pull the rope to raise the bowling ball. They can raise it to different heights. They observe the air pressure launching process when the ball falls. Using the tablet, they access information about air pressure causes. They expand their knowledge on the subject.

IV. Scientific Principles

The exhibit demonstrates a key scientific principle. Air flow generates pressure. Wind is caused by air movement.

When the bowling ball is pulled up and released, it falls. This compresses air inside the U-shaped pipe. Air volume decreases. The space becomes smaller. Air pressure increases.

This increased pressure exerts upward force on the tennis ball. The ball moves upward against its weight. The higher the bowling ball is pulled, the greater the air flow. More pressure generates higher tennis ball flight.

V. Explanation and Illustration Boards

Instruction Board:

Pull the rope to raise the bowling ball to different heights. Release the rope and observe the resulting phenomenon.

Graphic Board:

The graphic board illustrates the scientific principle. Air flow creates pressure. Wind occurs due to air movement. When the bowling ball is released, air inside the pipe compresses. Compressed air flows from the larger end to the smaller end. Volume decreases. Air pressure increases. Air exerts upward force on the tennis ball. The ball moves upward. Flight height depends on air flow and pressure. Higher pull creates greater pressure.

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