In this demo, a polyethylene strip is charged by rubbing with wool. The strip is then used to test what happens to the flow of charge when the strip is placed in contact with a conductor (iron nail) and the materials are then moved towards a neutral object. An extension to the demo enables students to test what happens when an insulator (eraser) is used in place of the conductor (iron nail).
by ERIN KEYZERS The purpose of these lessons is to integrate robotics (micro-controllers such as Arduino boards) and computational thinking/coding within the Grade 9 Science curriculum. This... read more
Categories: Lab/Student Activity
When light from the sun hits the Earth's atmosphere, the shorter wavelength blue light gets scattered in all directions at the same time. This is why the sky appears to be blue. The intensity of... read more