The effective weight change of someone standing on a bathroom scale in an elevator is demonstrated. Students identify the changes that occur as the elevator begins to rise, begins to descend, and rises and descends at a constant rate. Astronauts are shown sleeping in cubicles as well as strapped down, washing long hair with rinseless soap, exercising, eating, drinking juice, splitting water droplets, and working with equipment. Students compare each activity they see with what happens on Earth. Exercise on the Moon Students examine footage of astronauts moving about on the surface of the moon on foot, as well as on a lunar rover.
Students also view an astronaut simultaneously drop a feather and a hammer.
They make observations about conditions on the moon. The Speed of Radio Waves NASA film shows astronauts communicating with Earth. Students estimate the time delay between the signal from Earth to the response from the moon. Using this information, students calculate the speed of travel of a radio signal. Professional Development Videos Dr. Arthur Eisenkraft, Project Director, presents a short overview explaining how and why Active Physics works.