"Static Electricity Phenomena in Life" PPT download

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"Static Electricity Phenomena in Life" PPT download

Part One: Importing New Knowledge

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

Move the comb through dry hair close to your hair again and observe what happens.

How to explain these two phenomena?

PPT on electrostatic phenomena in life, part 2: new knowledge explanation

Please tell me what other static electricity phenomena occur in life?

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

Why don't objects normally appear to be charged?

different charges

Matter is made up of atoms or molecules. Atoms are composed of a positively charged nucleus and negatively charged electrons outside the nucleus.

Matter has two kinds of charges at the same time: positive and negative. 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 the outside world, 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.

Static electricity phenomena in life PPT, part 3: Classroom exercises

1. There are two kinds of charges in nature: ( ) and ( ). Like charges mutually ( ), different charges mutually ( ).

2. ( ) can transfer charge from one object to another, thereby making the object charged with static electricity.

3. When we use a plastic comb to comb dry hair, the comb band ( ), the hair band ( ).

Static electricity phenomenon in life PPT, part 4: expansion and extension

(1) Xiaoli saw an oil tanker driving by on her way to school. An iron chain was hanging on the back of the oil tanker and being dragged along the ground. What was the function of this iron chain?

The oil in the tank will become electrified due to friction during driving. Too much static electricity may cause sparks and fires due to sudden discharge. Iron chains on the ground can guide static electricity away at any time.

(2) When Xiao Ming was helping his mother with housework, he found that there was always a lot of dust on the TV screen. What was the reason?

Due to the structural principle of the TV, during the working process of the TV, electrons hit the fluorescent material behind the screen to display different colors, causing the screen to be charged with static electricity. Static electricity has a strong adsorption effect on dust particles in the air

Static electricity phenomenon in life PPT, Part 5: Class summary

There are many electrostatic phenomena in life. Objects can be charged through friction and other methods. Objects with the same charge repel each other, and objects with different charges attract each other. When charges flow, an electric current is generated.

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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: 2024-10-14

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

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