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JSS 2 SECOND TERM BASIC TECH Week 6 – 7 Topic: PLANE FIGURES INTRODUCTION The idea of area may be explained as the amount of space enclosed within the boundary of a figure. For instance, the area of the floor of a classroom is the amount of space enclosed within the four corners of the […]
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JSS 2 BASIC TECH Topic: ENERGY BASED TECHNOLOGICAL APPLIANCES Introduction We shall discuss the following: 1. Operation of a pressing iron, Operation of an electric kettle , operation of cookers, water heaters, gas lamp, gas cooker, kerosene cooker and charcoal pressing iron 2. Principles of evaporation leading to cooling by refrigeration 3. Operation of a
Week 4 Topic: Uses of Materials – Ceramics, Plastics and Rubber Ceramics Ceramics offer many advantages compared to other materials. They are harder and stiffer than steel; more heat and corrosion resistant than metals or polymers; less dense than most metals and their alloys; and their raw materials are both plentiful and inexpensive. Ceramic materials
JSS 2 SECOND TERM Basic Technology Topic: QUADRILATERALS AND POLYGONS DEFINITIONS A quadrilateral may be defined as a plane figure bounded by four straight sides. It also has four angles. Any two opposite angle points may be joined by a straight line termed the diagonal. A quadrilateral with its opposite sides equal and parallel is
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Definition Of Metals Metal is processed from a natural solid mineral found beneath the earth called iron-ore. In its natural state iron-ore contains a lot of impurities which is removed through smelting. Processing of Metal Iron ore is the first material needed for the processing of metal. The iron ore and other materials such as
Meaning of Orthographic Projection Orthographic projection is a method of drawing an object by means of plane views. While isometric drawing looks at all the three views (or faces) of an object together, orthographic looks at the same three views separately but linked together. In orthographic projections, we can look at each view and see
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