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Steel and Iron: Extraction, Types, and
Structural Uses Questions and Correct
Answers/ Latest Update / Already Graded
Iron Ore
Ans: A natural mineral from which iron is extracted.
Iron Ore Mining
Ans: The process of extracting iron ore from the earth.
Cast Iron
Ans: A type of iron that has been melted and poured into a
mold to create a specific shape.
Cast Iron Construction
Ans: The use of cast iron in building structures, exemplified by
Joseph Paxton's Crystal Palace.
Prefabricated Parts made with Cast Iron
Ans: Components manufactured off-site using cast iron, such
as those used in the Crystal Palace.
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Multiples and Sub-Multiples of 24' Sections
Ans: Fabricated sections that can be assembled into larger
structures, completed in 17 weeks.
Iron Ore Pellets
Ans: Spherical balls made from ground iron ore, a binder (clay),
and limestone.
Iron Ore Pellets mixed with Carbon (from Coal)
Ans: Iron ore pellets that have been combined with carbon to
enhance their properties.
Mild Carbon Steel
Ans: Steel with controlled carbon levels, providing strength
and flexibility for larger structures.
High Rise Structures
Ans: Tall buildings made possible by the use of mild carbon
steel, elevators, and electric pumps.
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Steel production greenhouse-gas emissions
Ans: Accounts for around seven percent of humanity's
greenhouse-gas emissions.
Global demand for steel
Ans: Expected to nearly double by 2050, necessitating the
development of green steel.
Green steel
Ans: Steel produced with reduced environmental impact to
combat climate change.
Composition of steel
Ans: Steel is primarily iron with a small amount of carbon
added to increase strength and flexibility.
Iron in the earth's crust
Ans: Iron makes up five percent of the earth's crust by weight.
Iron extraction problem
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Ans: Historically, iron extraction was unsolvable until the
discovery of reduction processes.
Reduction process
Ans: A method discovered around 2000 B.C.E. that allows iron-
heavy rock to become malleable when heated over charcoal
fires.
Blast furnaces
Ans: Main method used to reduce steel, capable of producing
ten thousand tons of iron in a day.
Coke
Ans: A processed form of coal used in blast furnaces instead of
charcoal.
Basic oxygen furnace
Ans: A furnace where purified iron is heated a second time
without coke.
By-product of iron production
All rights reserved © 2025/ 2026 |
Steel and Iron: Extraction, Types, and
Structural Uses Questions and Correct
Answers/ Latest Update / Already Graded
Iron Ore
Ans: A natural mineral from which iron is extracted.
Iron Ore Mining
Ans: The process of extracting iron ore from the earth.
Cast Iron
Ans: A type of iron that has been melted and poured into a
mold to create a specific shape.
Cast Iron Construction
Ans: The use of cast iron in building structures, exemplified by
Joseph Paxton's Crystal Palace.
Prefabricated Parts made with Cast Iron
Ans: Components manufactured off-site using cast iron, such
as those used in the Crystal Palace.
All rights reserved © 2025/ 2026 |
, Page |2
Multiples and Sub-Multiples of 24' Sections
Ans: Fabricated sections that can be assembled into larger
structures, completed in 17 weeks.
Iron Ore Pellets
Ans: Spherical balls made from ground iron ore, a binder (clay),
and limestone.
Iron Ore Pellets mixed with Carbon (from Coal)
Ans: Iron ore pellets that have been combined with carbon to
enhance their properties.
Mild Carbon Steel
Ans: Steel with controlled carbon levels, providing strength
and flexibility for larger structures.
High Rise Structures
Ans: Tall buildings made possible by the use of mild carbon
steel, elevators, and electric pumps.
All rights reserved © 2025/ 2026 |
, Page |3
Steel production greenhouse-gas emissions
Ans: Accounts for around seven percent of humanity's
greenhouse-gas emissions.
Global demand for steel
Ans: Expected to nearly double by 2050, necessitating the
development of green steel.
Green steel
Ans: Steel produced with reduced environmental impact to
combat climate change.
Composition of steel
Ans: Steel is primarily iron with a small amount of carbon
added to increase strength and flexibility.
Iron in the earth's crust
Ans: Iron makes up five percent of the earth's crust by weight.
Iron extraction problem
All rights reserved © 2025/ 2026 |
, Page |4
Ans: Historically, iron extraction was unsolvable until the
discovery of reduction processes.
Reduction process
Ans: A method discovered around 2000 B.C.E. that allows iron-
heavy rock to become malleable when heated over charcoal
fires.
Blast furnaces
Ans: Main method used to reduce steel, capable of producing
ten thousand tons of iron in a day.
Coke
Ans: A processed form of coal used in blast furnaces instead of
charcoal.
Basic oxygen furnace
Ans: A furnace where purified iron is heated a second time
without coke.
By-product of iron production
All rights reserved © 2025/ 2026 |
