High School, Physics Projects, Lessons, Activities (73 results)

Water striders (also called water bugs, pond skippers, etc.) are insects that can hop around on the surface of water (Figure 1). Unlike boats or other floating objects that are partially submerged and held up by the resulting buoyant force, water striders are held up by surface tension. Figure 1. Water striders (image credit Isaka Yoji). You can build your own water striders using thin wire (Figure 2 and summary video). Do some background research about… Read more

A mass driver is a proposed device that could launch payloads into space using a long tube lined with electromagnets (Figure 1). Some scientists argue that such a launch system would offer long-term cost savings over the use of chemical rockets. Scientists have proposed theoretical electromagnetic launcher designs as far back as the 1970s (O'Neill 1979). More recently, some have proposed the use of railguns originally developed for the U.S. Navy (McNab and McGlasson 2022). Other types of… Read more

A siphon is a handy device for emptying out a liquid reservoir that has no drain. For example, they're great for cleaning fish tanks. An interesting aspect of a siphon in action is that the liquid flows "uphill" for a portion of its journey through the tube. This project asks the question, is there a maximum height for that uphill part of the siphon? Read more