Урок по физике на тему Charge and Charge Interactions: Conductors and Insulators

Lesson plan
Form: 8a
Hours: 1
Date:
Theme of lesson: Charge and Charge Interactions: Conductors and InsulatorsForm of a lesson: group work
Materials: interactive board, cards, posters
Aims of a lesson:
Educational: Give a general concept electricity, teach the types of charges, compare with insulators
Developing : Work cooperatively with partners group members and ensure everyone has sufficient opportunities to see and understand the activities
Educative: To use in everyday life, to interact in each other.
Process of the lesson
I. Warming up motivation ( 10 minute)
Good morning class!
Good morning teacher!
How are you?
We are fine, thanks and you?-
I m fine too, you may sit down.
Charge and Charge Interactions: Conductors and InsulatorsToday we have  a 3 groups: electrons, neutrons and protons
-        You should to appoint captains.
What was your homework for today?
For homework you repeat the theme “ Temperature and Heat”
One pupil from the group
Come to the blackboard.
Answer the questions
1) Convert 30°C to K_________
2) Water freezes at ___________
3) Water boils at _____________
4) Specific heat energy formula_____________
5) Latent heat formula__________
6) How many temperature scale exist?__________
II. Introduce
Open your copybook and write down the new theme: Charge and Charge Interactions: Conductors and Insulators
Key words: electrons, conductors,
insulators, charge
By the end of this lesson you will be able
to:
-Electrical current is produced by the flow of electrons
- Compare atomic properties of conductors and insulators
What is electricity?
-Electricity is the flow or negative charge
Two kinds of charges
After being rubbed, a plastic ruler can attract paper scraps.
Ruler carries electric charge
Where do charges come from?
An atom is a fundamental unit of matter
made up of
protons (with a positive charge)
neutrons (neutral – no charge)
electrons (with a negative charge)
What is electricity?
Everything is made of atoms which contain POSITIVE particles called PROTONS and NEGATIVE particles called ELECTRONS.
Electrical Charge
Electric charge is given the symbol Q
Electrons are the charge carriers
that flow in an electrical circuit –
from the negative to positive
terminals.
Electrical Charge.Charge is measured in Coulombs which is given the symbol C
The charge on a proton is 1.6 x 10-19C which is the same size as the charge on an electron.
Electrons have a negative charge (Q) measured in coulombs (C).
The law of electric charges states that like charges repel, and opposite charges attract.
An electrical conductor is a material in which charges can move easily.
Most metals are good conductors because some of their electrons are free to move.
Conductors are used to make wires. For example, a lamp cord has metal wire and metal prongs.
Copper, aluminum, and mercury are good conductors.
An electrical insulator is a material in which charges cannot move easily.
Insulators do not conduct charges very well because their electrons cannot flow freely. The electrons are tightly held in the atoms of the insulator.
The insulating material in a lamp cord stops charges from leaving the wire and protects you from electric shock.
Plastic, rubber, glass, wood, and air are good insulators.

III. FixingExercsise 1
Divide the matter on conductors and insulators
Conductor Insulators
Plastic, rubber ,glass, oil, paper, cotton, pure water, silver, gold, aluminum, iron, bronze, dirty water,steelExercsise 2


IV. Final R
What was theme of the lesson?
What was new for you?
VI.Homework.Making the static detector

Rate the lessons of stick
Exercsise 1
Divide the matter on conductors and insulators
Conductor Insulators
Plastic, rubber ,glass, oil, paper, cotton, pure water, silver, gold, aluminum, iron, bronze, dirty water,steelExercsise 2