How to make a fake Helium balloon
In this experiment we will take a regular balloon and make it sticks to the ceiling – in a way that looks like it is a light helium balloon which is lighter than the air.
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Watching and Understanding: Static Electricity
Activity Overview
In this activity, students will watch three videos. They will describe what is going on in the experiments shown, and then watch the animation that explains the phenomenon and answer questions about it
Electrostatic, static, conductors and insulators
Knowledge building, Collaboration
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Rules of Thumb in Calculating Magnetic Force
A magnetic field is created by the movement of electric charges through metal. The existence of a magnetic field creates a real force that influences its surroundings. This force depends on the direction of the current and the field (the direction of the field lines) and their intensity. There are a few simple rules for determining the direction of this force. In fact, you can see it simply by using your hand. The video demonstrates the force and shows how to identify its direction.