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Ancient metals, chapter 1
Terms in this set (17)
Ancient people hammered the soft, pure iron from _______ into useful tools.
Charcoal is a (A. a meteorite that fell from the heavens; B. a type of coal found in the earth; C. made of almost pure oxygen; D. wood that has been heated without oxygen)
D. wood that has been heated without oxygen.
The only purpose of carbon in smelting iron from it's ore is so that it will burn and supply heat.
Which of these forms of iron is purest? (A. cast iron; B. charcoal; C. steel; D. wrought iron)
D. wrought iron
Cast iron is (A. brittle and will shatter if struck; B. soft and easily hammered into shape).
A. brittle and will shatter if struck.
Steel is quenched by (A. burying it in the earth; B. heating it in a oven for several days; C. heating it white hot and thrusting it into cold water; D. raising it overhead for lightning to strike)
C. heating it to white hot and thrusting it into cold water.
Cast iron, steel, and wrought iron differ only in the amount _______ they contain.
Rusting is a (A. slow; B. rapid) oxidation.
A tin can is made mostly of (A. tin; B. steel)
The one that looks more like silver is (A. brass; B. bronze; C. gold; D. pewter)
Metals maintain their properties regardless of temperature. True or false?
The more expensive metal is (A. aluminum; B. tin)
wrought iron is a _________?
pure form of the metal iron.
pewter is a __________?
Bright and shiny combination of tin with lead.
when tin gets cold it hardens. True or false?
Sparkles have fine iron particles coated on metal holders that sparkle when they burn. True or false?
A person with a will of iron is a ________
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