MATERIAL WORLD METAL & WOOD Presentation By Group 4 Members: Avanish

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Presentation transcript:

MATERIAL WORLD METAL & WOOD Presentation By Group 4 Members: Avanish Nicholas Ryan Vignesh

METALS Metals form a major part of materials in the world Common metals: e.g. Iron, Aluminum, Gold, Copper etc. Humans have discovered 86 metals till now Remaining Metals : 79

PROPERTIES Density - Generally High State – Mostly solid Malleability – High Thermal Conductivity – High Electrical Conductivity – High Magnetism – some metals

METALLURGY 3500 BC Science of extraction of metals. Source – Found on earth as ores Extraction - Mining

APPLICATIONS PAST PRESENT Coins Drainage Tools War craft Jewelry Make-up Utensils Construction Transport Space engineering Power Plants etc etc.. Now…. Can you name any industry which does not use metals?.....

WOOD What is Wood? Organic Material Source : Trees Properties of Wood Good Insulator Low Density Durability Permeability Low Flexibility

CLASSIFICATION Soft wood (Homogeneous) Hard wood (Heterogeneous)

TYPES OF WOOD Soft wood Hard wood Pine Hemlock Fir Redwood Spruce Cedar Mahogany Walnut Oak Cherry Rosewood Teak

APPLICATIONS PAST PRESENT Fuel Scare animals Housing Carvings Sculptures Agriculture Tools, Wheels, Buckets Furniture Canoe Exterior timbers Ground contact Fresh water equipment Marine timbers Flooring Gas treatment plants Paper Railway sleepers Now…. Do you think our race can survive without wood?

Bibliography Metals Wood http://en.wikipedia.org/wiki/Metal http://neon.mems.cmu.edu/cramb/Processing/history.html Matthew Cole, 2008, Science Diversity, Singapore Pearson Longman Ho Peck Leng, 2008, I-science Diversity, Singapore EPB Pan Pacific Kate Bedford, 2005, Our World Wood, Great Britain Aladdin Books Ltd. Wood http://en.wikipedia.org/wiki/Wood http://www.sawpa.org.za/UTP.htm http://goliath.ecnext.com/coms2/gi_0199-1167354/Past-present-and-future-of.html http://www.thisismyindia.com/ancient_india/ancient-india-civilization.html Mini Science Encyclopedia – Manhattan Press