Chemistry SS 2 Second Term
Week 3

Topic: Chemical Equilibrium
Introduction

Physics SS3 Week 8
Topic: CONDUCTION OF ELECTRICITY IN GASES
INTRODUCTION
Electrons: When a high tension discharge passes between electrodes sealed into a partially evacuated vessel, the gas becomes luminous s […]

 Physics SS 3 Week 7
Topic: PHOTOELECTRIC EFFECT
INTRODUCTION
In 1887, photoelectric effect was invented by the scientist H. Hertz. When we passing a light into a material, the material should emit an […]

Physics SS 3 Week 6
Topic: QUANTUM
 INTRODUCTION
Some of the important postulates of the Bohr’s model of the atom were that the electrons moved around the nucleus in specified orbits. In these orbits they ca […]

Physics SS 3 Week 4
Topic: RADIOACTIVITY
RADIOACTIVITY
Radioactivity refers to the particles which are emitted from nuclei as a result of nuclear instability. Because the nucleus experiences the intense […]

Physics SS 2 Week 5
Topic: Transformation of Elements
Transformation of Elements
There are two types of radioactivity – natural and artificial radioactivity.
The phenomenon of radioactivity was first d […]

Chemistry SS 2 Second Term
Week 8

Topic: Compound of Nitrogen (Ammonia)
Introduction

Physics SS3 Week 3
Topic: MODEL OF ATOMS
Thompson Rutherford Model
Modern atomic theory provides a reasonably satisfactory explanation of the properties of matter, the mechanisms of chemical change and the […]

Week 2

Topic: GRAVITATIONAL FIELD AND LAW, GRAVITATIONAL POTENTIAL, ESCAPE VELOCITY , POTENTIAL ENERGY IN GRAVITATIONAL FIELD

Concept of Gravitational Field

There are two types of forces – contact f […]

JSS 3 SECOND TERM BASIC TECH
Week 10
Topic: MECHANICAL ENERGY TRANSMISSION SYSTEM (Linear Motion)
Content:
Linear Motion
Lever arrangement to produce linear motion
Use of slides and slots in mechanical […]

Physics SS 3 Week 1
Topic: ALTERNATING CURRENT CIRCUIT
ALTERNATING CURRENT
A.C. circuits are circuits through which an alternating current flows. Such circuits are used extensively in power transmission, radio, […]

JSS 3 SECOND TERM BASIC TECH Week 8

Topic: MECHANICAL ENERGY TRANSMISSION SYSTEM
Content:

Belt and chain drives
Use of belt drives where slip is not important
Use of chain drives where slip is not […]

JSS 3 SECOND TERM BASIC TECH
Week 7

Topic: MECHANICAL ENERGY TRANSMISSION SYSTEM (FRICTION)

Content:

Friction and its effects
Friction between two surfaces sliding on each
Advantages and […]

JSS3 SECOND TERM Week 9

Topic: MECHANICAL ENERGY TRANSMISSION SYSTEM (Gears)

Content:

Gears, gearing and related calculations
Types of gears
Uses of gears
Gear ratios and speed ratios […]

JSS 3 SECOND TERM BASIC TECH WEEK 5

Topic: PRINCIPLES OF MEASUREMENT AND MEASURING
CONTENT:

Principles of measurement and measure
Tools and Cutting
Files and Filling
Drills and Drilling […]

JSS 3 SECOND TERM BASIC TECH Week 4

Topic: METAL WORK MACHINES
Introduction
A machine tool is a machine that cuts metals and performs some other operations by manipulation of its parts. This chapter […]

Physics SS 1 week 10
Topic: ELECTROMAGNETIC INDUCTION
INDUCED CURRENT
Definition: Electromagnetic induction (or sometimes just induction) is a process where a conductor placed in a changing magnetic field (or a […]

Biology SS 2, Third Term, Week 10
Topic: Food Shortage 

JSS3 BASIC TECHNOLOGY SECOND TERM Week 2

Topic: WOOD WORK MACHINES
INTRODUCTION
Woodwork machines refer to the common equipment used in the workshop. Most of these machines are heavy and cannot be handled […]

Week 9
Topic: ELECTROMAGNETIC FIELD
Electromagnetic field
Electromagnetic field is a field representing the joint interaction of electric and magnetic field.
Electromagnetic field exerts force on charged […]