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).
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Teacher Demo/Student Activity: Disappearing Volume
Categories: Lab/Student Activity, Teacher Demonstration
In this activity, students mix a given quantity of salt with a fixed volume of water. Mass and volume measurements are made before and after mixing to determine if these quantities change. Students... read more
GRADE 10 APPLIED SCIENCE - ACIDS AND BASES
Categories: Lab/Student Activity
Students will investigate chemical reactions and their uses through a series of inquiry based activities where they will develop their understanding of acids and bases and how they react. read more
Student Activity: Parallel Circuits
Categories: Lab/Student Activity
In this demo, two circuits are constructed to enable comparison of the brightness of a light bulb placed in a circuit with one cell and the brightness of the same light bulb in a circuit with three... read more