WorksheetsMetals 1
Total questions: 17
Worksheet time: 15mins
Identify the natural material from which metals are commonly obtained.
ore
soil
gravel
peat
A (a) furnace is primarily used in the extraction of iron from its ore.
Pig iron needs to be further refined to create steel by reducing the (a) content.
iron
silicon
oxygen
Define the term: Surface mining.
Surface mining is a method of mining used to extract minerals that are near the surface of the Earth.
Surface mining is a process of extracting oil from deep ocean beds.
Surface mining refers to the cultivation of crops on mountain slopes.
Surface mining is a technique used to drill for natural gas beneath the sea.
A mallet has the following advantage over a hammer:
It delivers softer blows without damaging the material.
It is heavier and more difficult to control.
It is used for driving nails into wood.
It is made entirely of metal.
One advantage of mining is:
It provides raw materials for industries.
It reduces pollution in the environment.
It increases forest cover.
It eliminates the need for energy resources.
Refining is such an energy intensive process because:
it requires high temperatures and pressures to separate and purify materials.
it uses only renewable energy sources.
it is a completely automated process.
it does not involve any chemical reactions.
List some of the different types, shapes, and profiles of metal stock mentioned in the text.
Tube, box, sheet, strip and rod
Types of shapes metals come in
Wall thickness
Otherwise known as gauge
Profile
Shape of the metal from end
Pitch
Coarseness of the thread
Diameter
eg M10 bolt = 10mm diameter
Metals degrading in landfill sites might cause which environmental issue?
Release of toxic substances into soil and water
Increase in plant growth
Reduction in greenhouse gases
Improvement of air quality
Select the three metal items you might see from your seat in the workshop or classroom and identify their metals.
Chair legs (steel), door handle (aluminum), scissors (stainless steel)
Chair cushion (plastic), window pane (glass), book (paper)
Table top (wood), chalk (calcium carbonate), eraser (rubber)
Curtain (fabric), whiteboard (plastic), pencil (wood)
List any specialist tools used when working with metals.
Hacksaw
File
Angle grinder
Cordless drill
Centre punch
Hacksaws are used to cut (a) lines, while Abrafiles can follow (b) lines using a blade with a round cross-section.
Files come in different grades and profiles. Which of the following are two types of file profiles shown in the picture?
Flat and round
Curved and spiral
Hexagonal and octagonal
Smooth and rough
A 'knurled' handle on a torch provides which function?
Improved grip
Increased weight
Enhanced brightness
Faster ignition
What is brazing?
A method to cool metals
A permanent joining method used to join similar metals or metals of a similar melting point
A way to paint metals
A method to cut metals
Rank the following metals from most malleable to least malleable.
Gold
Silver
Aluminium
Copper
Iron
Correctly label the five different metal products commonly found in a kitchen, along with their typical metals and the stresses they might undergo.
Plastic bowl (no metal), glass cup (no metal), wooden spoon (no metal), ceramic plate (no metal), silicone spatula (no metal)
Stainless steel knife (thermal stress), copper wire (electrical stress), gold ring (decorative stress), silver coin (no kitchen use), iron nail (construction stress)
Aluminum foil (thermal stress), plastic fork (no metal), glass jar (no metal), wooden cutting board (no metal), ceramic mug (no metal)
