1. Explore the operation principle of the fountain: Helen Fountain makes the water flow into the shape of a fountain through the principle of air pressure. We can verify the principle of fountain formation through experiments, and further understand the pressure of liquid and the movement law of fluid.
2. Research on the control mechanism of fountain water level: Helen Fountain can control the height and flow of water spray by adjusting the water level. Through the experiment, we can study the water level control mechanism of fountain and the method of adjusting the flow rate and spray height, which has a certain guiding role in optimizing the fountain system.