Friction electrification of scientific activities in kindergarten large classes

Rubbing a watercolor pen on your head can suck up small pieces of paper, because the watercolor pen will generate static electricity after rubbing with your hair. This phenomenon is called triboelectrification. I have compiled an article for you about friction electrification of science activities in kindergarten large classes for reference only. More articles are available.

The goal of friction electrification in kindergarten science activities;

1, interested in exploring natural things.

2. Be able to operate the experiment boldly and cooperate with peers.

3. Feel that the plastic rod can absorb paper scraps after rubbing.

Activity preparation:

1, plastic stick or plastic pen (colored pen), wooden stick, comb, ruler, paper.

2. Record form.

Activity flow:

1, "guess and think" to stimulate children's interest in participating in activities.

(1) The teacher shows a basket full of scraps of paper to make the children think.

Teacher: If you don't hold the paper directly with your hands, how can you take out the small pieces of paper in the basket?

(2) Teachers provide colored pens and continue to let children explore ways to take out scraps of paper.

2. Teachers demonstrate the experiment of "friction electrification" and let children try the experiment.

(1) Teachers' experiments and children's careful observation.

(2) Let the children experiment and try to take out small pieces of paper with colored pens.

(3) Teachers ask questions and make a summary according to children's experiments.

Summary: A small piece of paper can be sucked up by rubbing with a watercolor pen on your head, because the watercolor pen will generate static electricity after rubbing your hair. This phenomenon is called triboelectrification.

(4) Let children do experiments with colored pens that have not been rubbed on their heads or other places (clothes), and then compare them with the experimental results made by teachers. See if there's anything new.

3. Try to use different materials for the experiment of "triboelectrification".

(1) The teacher introduces the homework materials and record sheets.

(2)* * Test the experimental results of different materials.

4. Discussion:

(1) Why are some materials tested successfully? (plastic)

(2) Try how many sheets of paper the marker can absorb. Why?

Activity expansion:

These plastic materials not only generate static electricity when rubbing against hair, but also generate static electricity after rubbing. Please have a try.