Topicmcd063c94743ae569_1528449000663_0Topic

Electrical interactions

Levelmcd063c94743ae569_1528449084556_0Level

Second

Core curriculummcd063c94743ae569_1528449076687_0Core curriculum

VI. Electricity. Student:

1) describes methods of electrifying bodies by friction and contact; indicates that these phenomena rely on the movement of electrons;

16) experimentally:
1) demonstrates electrification phenomena by rubbing or touching.

Timingmcd063c94743ae569_1528449068082_0Timing

45 minutes

General learning objectivesmcd063c94743ae569_1528449523725_0General learning objectives

Familiarization with the electrical interaction and its effects.

Key competencesmcd063c94743ae569_1528449552113_0Key competences

1. Recognition of the presence of electrical interaction.

2. Determining the source of electrical interactions.

3. Describing the effects of electrical interaction.

Operational (detailed) goalsmcd063c94743ae569_1528450430307_0Operational (detailed) goals

The student:

- recognizes the electrical interaction and its effects.

Methodsmcd063c94743ae569_1528449534267_0Methods

1. Flipped classroom.

2. Learning through observation.

Forms of workmcd063c94743ae569_1528449514617_0Forms of work

1. Individual work.

2. Work with the whole class.

Lesson stages

Introductionmcd063c94743ae569_1528450127855_0Introduction

Students get acquainted with electrical interactions.

Task 1
Students look at photos prepared by the teacher, that present: 
afterglow, atmospheric discharge, the electrified balloons repel each other.

Proceduremcd063c94743ae569_1528446435040_0Procedure

Task 2
Perform the experiment described below.

Experiment 1
Electrical interactions.

Problem:
Presentation of electrical interactions.

Hypothesis:
The bodies can be electrified.

You will need:
a) two balloons;

b) flannel cloth;

c) tripod;

d) rope;

e) paper scraps.

Instruction:
1. Rub one of the balloons with a flannel cloth.

2. Close the paper scraps to the balloon.

3. Hang two balloons on a tripod in close proximity to each other.

4. Rub them with a flannel cloth.

5. Observe the presented phenomena.

Summary:
In the first case, paper scraps were attracted by a balloon.

In the second case, two balloons moved away from each other.

The bodies under study have been electrified, i.e. the electrical interactions occur here.

The force in these interactions can cause the body to be attracted or repelled.

The fact of repelling or attractingattractingattracting electrified bodies is explained by the existence of two types of electric charges: positive and negative.

Task 3
Specify the type of chargechargecharge that two bodies have been electrified.

[Illustration]

Conclusion:

There are two types of electric charges: positive charges and negative charges.mcd063c94743ae569_1527752263647_0There are two types of electric charges: positive charges and negative charges.

Task 4
Run the Geogebra applet.

[Geogebra applet 1]

Conclusion:

The bodies charged with the same type of charge repel each other.
The bodies charged with various types of charges are attracted.
mcd063c94743ae569_1527752256679_0The bodies charged with the same type of charge repel each other.
The bodies charged with various types of charges are attracted.

Task 5
Run the Geogebra applet.

[Geogebra applet 2]

Task 6
Choose the sentences that correctly describe the nature of electrical interactions.
a) Electrical interactions are long‑rangelong‑rangelong‑range interactions.

b) Bodies with the same type of charge repel each other.

c) Electric interactions are direct interactions.

Answer:
a) True.

b) True.

c) False.

Lesson summarymcd063c94743ae569_1528450119332_0Lesson summary

The bodies that undergo electrification affect each other. We say that the electric force causes them to be approached or zoomed out. The fact of repelling or attracting electrified bodies is explained by the existence of two types of electric charges: positive and negative.
Charges of the same sign are called like charges, and charges of different characters are opposite charges. Like charges repel each other, while opposite charges attract.
mcd063c94743ae569_1527712094602_0The bodies that undergo electrification affect each other. We say that the electric force causes them to be approached or zoomed out. The fact of repelling or attracting electrified bodies is explained by the existence of two types of electric charges: positive and negative.
Charges of the same sign are called like charges, and charges of different characters are opposite charges. Like charges repel each other, while opposite charges attract.

Selected words and expressions used in the lesson plan

attractingattractingattracting

chargechargecharge

electric interactionelectric interactionelectric interaction

electrified bodyelectrified bodyelectrified body

electrostaticselectrostaticselectrostatics

like chargeslike chargeslike charges

long‑rangelong‑rangelong‑range

opposite chargesopposite chargesopposite charges

repulsionrepulsionrepulsion

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attracting1
attracting

przyciąganie

Rkj6pWijos5Sd1
wymowa w języku angielskim: attracting
charge1
charge

ładunek

RSvjziHo0E5Hb1
wymowa w języku angielskim: charge
long‑range1
long‑range

dalekozasiegowe

RRPMR3jrDgjEq1
wymowa w języku angielskim: long‑range
electric interaction1
electric interaction

oddziaływanie elektryczne

RmUJqPrIutJRc1
wymowa w języku angielskim: electric interaction
electrified body 1
electrified body

ciało naelektryzowane

Rz8wVy1kZRZWM1
wymowa w języku angielskim: electrified body
electrostatics1
electrostatics

elektrostatyka

RArpQrPFy6xw41
wymowa w języku angielskim: electrostatics
like charges1
like charges

ładunki jednoimienne

RZQEImVmbCNYQ1
wymowa w języku angielskim: like charges
opposite charges1
opposite charges

ładunki różnoimienne

R1SFcMNY5HxgZ1
wymowa w języku angielskim: opposite charges
repulsion1
repulsion

odpychanie

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wymowa w języku angielskim: repulsion