"Static Electricity Phenomena in Life" Electricity PPT Teaching Courseware

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"Static Electricity Phenomena in Life" Electricity PPT Teaching Courseware

Part 1: Experience the phenomenon of static electricity

Run a plastic comb through dry hair and slowly approach the scraps of paper and observe what happens.

Bring the plastic comb that you passed through dry hair to your hair again and observe what happens.

Static electricity phenomena can be seen everywhere in life. Let’s talk about the electrostatic phenomena we know.

Static electricity is present in everything around us, living and non-living things including humans.

Static electricity phenomenon in life PPT, part 2: different charges

Since static electricity exists in all materials, why don't we usually feel that objects are charged?

It turns out that matter has two kinds of charges at the same time: positive charge and negative charge. Since the positive and negative charges are equal in number and cancel each other out, the object does not appear to be charged. When an object is affected by external influences (such as friction), the charge on the surface of the object is transferred, and the number of positive and negative charges is different, and the object becomes charged.

When we use a plastic comb to comb dry hair, the comb is negatively charged and the hair is positively charged, and they attract each other when they are close.

Do the following experiment to further observe what happens between rubbing objects.

Use a piece of wool to repeatedly rub one side of the inflated balloon, bringing that side of the balloon close to your hair. Observe what happens.

Static electricity phenomenon in life PPT, part 3: Let the charge flow

Friction transfers charge from one object to another, causing objects to become electrostatically charged. But in a statically charged object, the charge cannot flow continuously.

In order for charges to flow to form an electric current, two conditions need to be met:

One is to have power, that is, power supply; the other is to have a circuit - current can only flow in the circuit

Common electrical appliances in our lives, such as televisions, refrigerators, lights, etc., all work normally with the help of power sources and circuits. (Circuit: a current path connected by power supply, electrical appliances, wires, electrical components, etc.)

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For more information about the PPT courseware "Static Electricity Phenomena in Electrical Life", please click the "Static Electricity Phenomena in Electrical Life" ppt tag.

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Update Time: 2024-11-20

This template belongs to science courseware Fourth Grade Science Volume 2, Textbook Edition industry PPT template

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