Uses Of Metals
Bayani Gaba-gaba
Why is aluminium chosen for aircraft but copper for electrical wiring? The answer lies in matching the physical properties of each metal to the job in hand. A metal that is light and resists corrosion suits one task; a metal that conducts electricity well and bends into wires suits another.
In this lesson you will learn the main uses of aluminium and copper, and in each case the property that makes the metal suitable. This linking of use to property is exactly what examiners ask for, and it is how engineers choose materials in the real world.
Manufura
- Describe the uses of metals in terms of their physical properties, including: (a) aluminium in the manufacture of aircraft because of its low density (b) aluminium in the manufacture of overhead electrical cables because of its low density and good electrical conductivity (c) aluminium in food containers because of its resistance to corrosion (d) copper in electrical wiring because of its good electrical conductivity and ductility.
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Barka da kammala darasi akan Uses Of Metals. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- Why is aluminium used in the manufacture of aircraft? A. High density B. Low density C. Magnetism D. High reactivity Answer: B
- Why is copper used in electrical wiring? A. It is magnetic B. It has low density C. It conducts electricity well and is ductile D. It resists heat Answer: C
- Why is aluminium used to make food containers? A. It is heavy B. It resists corrosion C. It is magnetic D. It is very reactive Answer: B
- Which two properties make aluminium suitable for overhead electrical cables? A. High density and hardness B. Low density and good electrical conductivity C. Magnetism and ductility D. Brittleness and low cost Answer: B
- Which property allows copper to be drawn into wires? A. Brittleness B. Ductility C. Low melting point D. Magnetism Answer: B
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