JSS 1 Basic Technology (1st, 2nd & 3rd Term)

Basic Science


Meaning of Energy Energy is defined as the ability or capacity to do work. The unit of energy is Joules (J) Sources of Energy There are two main sources of energy, the natural and the artificial sources of energy. The natural sources of energy are: Sun Food Natural gas Coal Wind Crude oil Wood Water […]

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basic technology (Secondary School)

Rubber and plastics

Rubber vs. Plastic In the past, people have seen the progress of technology. From the simple usage of wood and cement to the invention of metal, mankind has really made great progress to become what they are today. Along with this progress are some changes to their lifestyle. These changes were brought about by the

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basic technology (Secondary School)

Properties of ceramics and glass

Ceramic Material Characteristics Ceramics and glasses are inorganic, nonmetallic materials consisting of metallic and nonmetallic elements bonded primarily with ionic and covalent bonds. These high strength bonds give rise to the special characteristics of these materials. They occupy a unique place in the spectrum of engineered materials offering many desirable alternatives to the metals and

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basic technology (Secondary School)


Metals – Ferrous and Non Ferrous 1. Metals. Exercise 1: Make a list of all the different metals that you know about. 2. Metals. Two main groups, 1.Ferrous. 2.Non-Ferrous. 3. Metals Ferrous Pure Ferrous Metals Non Ferrous Ferrous Alloys Pure Non Ferrous Metals Copper Non Ferrous Alloys Alum. Brass Bronze Solder Zinc Tin High Speed Steel Copper

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basic technology (Secondary School)

Properties of metals

Differences and similarities between metals and non-metals Properties: Metals: Non-metals: Strong Brittle Malleable and ductile Brittle React with oxygen to form basic oxides React with oxygen to form acidic oxides Sonorous Dull sound when hit with hammer High melting and boiling points Low melting and boiling points Good conductors of electricity Poor conductors of electricity

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basic technology (Secondary School)

Properties of materials

What is wood? You often hear people grumbling about money and all kinds of other things that “don’t grow on trees”; the great thing about wood is that it does grow on trees—or, more specifically, in their trunks and branches. Structure of wood Take a tree and peel off the outer “skin” or bark and what you’ll find is

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basic technology (Secondary School)

Workshop safety

Rules and Regulations 1) Never work alone in the workshop, work at least in pairs. This is so because in case of industrial/workshop accident the other partner will be a helper (Ecclesiastes 4:9-10) it’s all about Teamwork. 2) Think about what you are doing; think before you start a job and during the entire time

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basic technology (Secondary School)

Work Shop Safety

Workshop rules and safety considerations Workshop safety is everyone’s responsibility, the following rules have been put in place to ensure the safety of all students and staff. Please read the safety rules carefully before entering the workshop. Workshop rules Student affected by drugs or alcohol are not permittedin the workshop Students with any health problems that

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basic technology (Secondary School)

Safety guidelines

Footways or footpaths (including any path along the side of a road) should be used if provided. Where possible, avoid being next to the kerb with your back to the traffic. If you have to step into the road, look both ways first. Always show due care and consideration for others.   If there is

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basic technology (Secondary School)


Technology (“science of craft”, from Greek τέχνη, techne, “art, skill, cunning of hand”; and -λογία, -logia[2]) is the collection of techniques, skills, methods, and processes used in the production of goods or services or in the accomplishment of objectives, such as scientific investigation. Technology can be the knowledge of techniques, processes, and the like, or it can be embedded in machines to allow for operation without detailed knowledge of their workings.   The simplest form

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basic technology (Secondary School)


ELECTRIC CIRCUITS Electric circuit can be defined as the path provided for easy flow of electric current.  It is for conversion of the electric current into useful purposes such as lighting and heating.  Electric circuit is connected or fitted with devices that control and measure the current and energy used in the process. Simple electric


basic technology (Secondary School)


DEFINITION OF MAINTENANCE Maintenance in engineering work is defined as the functions that should be carried out every day in order to keep the plant or any engineering equipment in good operating condition.  Any breakdown in plant and engineering equipment is the result of inadequate maintenance of equipment.   TYPES OF MAINTENANCE Predictive maintenance: This


basic technology (Secondary School)


In order to work safely and conveniently on any work piece, it needs firmly secured. The devices used for holding these work piece firmly are called holding vices. Holding devices include the following: Vices Clamps Pliers   VICES Vices are used for holding objects rigidly in position, so that desired operations can be carried out.


basic technology (Secondary School)


METAL WORK- HAND TOOL –  CUTTING AND DRIVING TOOLS  CUTTING TOOLS Cutting tools are tools used for cutting materials by either sawing, filing, chiseling, scraping. Cutting tools include the following: Hacksaw Files Chisel Scraper   Hacksaw The hacksaw consists of two parts: the frame and the blade. It is used mainly for cutting metals in


basic technology (Secondary School)


METAL WORK- HAND TOOL – MARKING OUT AND MEASURING TOOLS Metal is one of the materials used in technology for construction and fabrication of devices. Metal as a material can be fabricated into various shapes and products. However, to be able to do that, you need appropriate tools.  These tools are either hand tools or

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basic technology (Secondary School)


WOODWORK HAND TOOLS – BORING TOOLS, CUTTING TOOLS BORING TOOLS Boring tools are the tools used for making holes on wood. The major tzpes are The brace The bits Gimlet Bradawl   THE BRACE: This is a tool used for holding and turning the drill bits or twist drill when drilling hole. There are two


basic technology (Secondary School)


REVISION ___ is a universal language used for communication among technical people (a) Scaling (b) Technical drawing (c) Sketching (d) Oblique. Technical people include the following except (a) engineers (b) technicians (c) builders and draughtsman (d) lawyer Which of the following is not a drawing instrument (a) set squares (b) French curve (c) microscope (d)

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