15th July 2020

GRADE 4 : BASIC SCIENCE/TECHNOLOGY : WEEK 6

NEW APPROACH

WEEK/TERM: THIRD TERM /WEEK 6

DATE: 26th June, 2020

SUBJECT: Basic Science and Technology

TOPIC: Basic Electricity

Reference: Stan Basic Science and Technology for primary 5.

Brief explanation

Imagine what life would be without electricity. That means the use of electrical appliances such as fans, refrigerators, televisions, radio, computers, pressing irons etc. would be impossible. Electricity is very important in our lives. Thanks to Michael Faraday who discovered electricity.

Notes for the Pupils

Electricity

Electricity is the flow or movement of free electrons. It is a form of energy. There are two types of electricity, namely

1. Current electricity
2. Static electricity

1. Current electricity: This type of electricity is generated as a result of free movement of free electrons in chemical substances and metals. It is the most useful type of electricity used to operate our electrical and electronic appliances. there are two types of current electricity, namely: (a) A.C – Alternating Current

(b) D.C – Direct Current

1. Static Electricity: This type of electricity involves the free electrons gathered in one position. Example: The use of pen or plastic to rub vigorously on wool, fur or hair and then bringing it near small piece of _____. You discover the paper will attract the paper.

Electrolytes

An electrolyte is a solution which allows electrolytes to pass through it. Electric current is a pathway or a complete cycle through which an electric current travels.

Conductor

A conductor is any material that allows electricity to pass through it. Examples: metals, steel etc.

Non-conductors (Insulators)

Insulators (Non-conductor) are any material that does not allow electricity to pass through it. Examples: wood, plastic, rubber etc.

Exercises/Assignment

1. Define the following:

(a) Electricity

(b) Electrolytes

1. Differentiate between the following:

(a) Static and current electricity.

(b) Conductors and Non-conductors (Insulators)

1. Who discovered electricity?