Materials Technology

Question 1

Breaking up ships

Answer 1

Desguace de barcos

Question 2

Demolishing building

Answer 2

Demolición de edificios

Question 3

Recycling electronics

Answer 3

Reciclaje de productos electrónicos

Question 4

Scrapping cars

Answer 4

Desguace de coches

Question 5

Aluminium

Answer 5

Aluminio

Question 6

Copper

Answer 6

Cobre

Question 7

Glass

Answer 7

Vidrio

Question 8

Plastic

Answer 8

Plástico

Question 9

Rubber

Answer 9

Goma

Question 10

Steel

Answer 10

Acero

Question 11

Timber

Answer 11

Madera

Question 12

scrap can be sorted easily using magnetism. if the metal is galvanised (coated with zinc) the zinc fully recyclable. if it stainless steel other metal mixed with the iron, such as chromium and nickel, can also be recovered and recycled.

Answer 12

Steel

Question 13

sorting is critical, as the are key differences between the clear and coloured material used in bottles an d jars, and the high-grade material used in engineering applications, which contains traces of metals

Answer 13

Glass

Question 14

Scarity makes recycling especially desirable, and justifies the cost of removing insulation from electric wires, which are a major source of scrap. Pure metal can also be recovered from alloys derived from it, notably brass (which also contains quantities of zinc, and often lead) and bronze (which contains tin)

Answer 14

Copper

Question 15

the cost of melting down existing metal is significantly cheaper than the energy-intensive process of electrolysis, which is required to extract new metal from ore

Answer 15

Aluminium

Question 16

Hardwood and softwood can be reused. However, the frequent need to remove ironmongery and saw or plane off damaged edges, can make the process costly

Answer 16

Timber

Question 17

Tyres are the primary source of recyclable material. These can be reused whole in certain application. They can also be ground into crumbs which have varied uses

Answer 17

Rubber

Question 18

An obstacle to recycling is the need to sort waste carefully. While some types can be melted down for reuse, many cannot, or result in low-grade material

Answer 18

Plastic

Question 19

Stainless steel

Answer 19

Acero inoxidable

Question 20

Iron

Answer 20

Hierro

Question 21

Bronze

Answer 21

Bronce

Question 22

Lead

Answer 22

Plomo

Question 23

Hardwood

Answer 23

Madera dura

Question 24

Ore

Answer 24

Mineral

Question 25

Softwood

Answer 25

Madera blanda

Question 26

a type of steel not needing a protective coating, as it doesn’t rust

Answer 26

Stainless steel

Question 27

a metal used to make brass, and in gavanised coatings on steel

Answer 27

Zinc

Question 28

the predominant metal in steel

Answer 28

Iron

Question 29

a dense, poisonous metal

Answer 29

Lead

Question 30

rocks from which metals can be extracted

Answer 30

Ore

Question 31

an alloy made from copper and tin

Answer 31

Bronze

Question 32

timber from pine trees

Answer 32

Softwood

Question 33

timber from deciduous trees

Answer 33

Hardwood