Students investigate the depletion of nonrenewable resources. The scene is a world map with continents and some regions identified. A video depicts the formation of oil and shows why it is nonrenewable. Students are shown bar graphs displaying the relative oil supply and relative oil consumption of each continent. Students analyze this data, consider what might be the effects of running out of fossil fuels, and suggest conservation strategies.
Diagrams show how negative electrical charges jump from hand to knob as the two come together.
They see magnetic field lines and look at the magnetic domains of a large bar magnet. Students investigate the workings of parallel and series circuits.