End Of Year Exams Flashcards
What are some examples of non ferrous metals?
Nickel
Aluminium
Copper
Lead
What are some examples of ferrous metals?
Carbon steel
Stainless steel
Engineering steel
Cast iron
What are some examples of alloy metals?
Bronze
Steel
Brass
Solder
Where does metal come from?
They are found in ores in the earth’s crust
Are metals renewable or non renewable?
Metals are a non renewable resource, as there is a finite amount of metal in the earth.
What are negative effects that metals have on the environment?
- Most heavy metals cause environmental and atmospheric pollution, and may be lethal to humans.
- Heavy metals can become strongly toxic by mixing with different environmental elements, such as water, soil, and air, and humans and other living organisms can be exposed to them through the food chain.
List 10 tools
Piercing saw
Tin snips
Craft knife
Vacuum former
Pillar drill
Metal punch
Soldering iron
Files
Polishing
Scribe
List 5 tools and their uses
Chainsaw sharpener - Sharpens chainsaw
Snips - Cut sheet metal
Soldering iron - Heat solder
Vacuum former - Used to shape plastic
State 3 health and safety precautions
Tie up your hair
Wear apron
Wear goggles
Conductive
The ability to heat or electricity to travel though a material
Sustainable
The avoidance of depleting non renewable, natural resources, maintaining
Malleable
The ability of a material to withstand forces without bending or breaking
Renewable
A natural resource that is depleted when used
Durable
The ability of a material to withstand damage or wear
Ductile
The ability of a material to deform by bending, twisting, or stretching
Brittle
When a material cannot absorb energy and will result in breakages
What are the 5 main components of a circuit board and what do they do?
USB lead - Carries power
Switch - Closes and opens circuit
LED
PCB - Provide electrical connection
Resistor - Controls how much electricity flows
What are the 5 main components of a circuit board and what do they do?
USB lead - Carries power
Switch - Closes and opens circuit
LED
PCB - Provide electrical connection
Resistor - Controls how much electricity flows
What are the 2 categories of polymers?
- Synthetic
- Natural
What is the difference between synthetic and natural polymers?
Synthetic polymers are derived from petroleum oil and made by scientists and engineers
What raw material is used to form polymers?
Petroleum
Why are polymers bad for the environment?
- The non-biodegradable nature of synthetic polymers makes them a permanent waste
- The drilling of petroleum can cause major disruptions to wildlands and habitats
Name the 6 polymers
Polyethene terephthalate
High-density polyethene
Polyvinyl chloride
Low-density polythene
Polypropylene
Polystyrene
