The purposes of this research are to make the hydraulic ram pump suitable as a teaching material and to examine its characteristics . The hydraulic ram pump raises water to a level which is higher than its original position by simply using the potential energy of the water without using any outside energy such as gas or electricity . In this study , we made a hydraulic ram pump , which can be made easily and whose characteristics can be experimented , and examined its characteristics , It has

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... e following characteristics ; a . By utilizing a kerosene supply pump , a hydraulic ram pump can be made easily . b. It is possible to experiment with changing conditions by utiiizing the joint of the water service pipe . ¢ . It is possible to experiment in the simple operation of measuring the quantity of water . d. There is no significant difference on the pumpage of the hydraulic ram pump , even if the angle of the feed pipe is changed . e . The pumpage of the hydraulic raIn pump increases , as the head gets bigger . fThe pumpage of the hydraulic ram pump increases with the length of the feed pipe . g. The pumpage of the hydraulic ram pump increases when a weight was attached to the water pumping valve . The hydraulic ram puInp has a strange aspect which apparently does not obey the energy cQnservation law . Therefore , it has great potential as a teaching material for inquiry activities.