WorksheetsPearson - 9E/F - Material Failure & Demolition
Total questions: 21
Worksheet time: 11mins
What disease did Philip and Ross die from due to asbestos exposure?
Mesothelioma
Skin cancer
Leukemia
Lung cancer
Which company operated the asbestos mine in Wittenoom?
Western Australian Government
Australian Blue Asbestos
Lang Hancock's Money Leases
CSR
What was the primary use of asbestos during World War II?
To fireproof buildings and clothing
To make jewelry
To create insulation for homes
To build roads and bridges
What was the population of Wittenoom at its peak?
25,000
20,000
15,000
10,000
What was the main material used to protect children from injuries in the school playground in Wittenoom ?
Rubber
Wood chips
Asbestos
Sand
When did CSR finally shut down the mining operations in Wittenoom ?
1966
1950
1975
1980
What was the estimated number of deaths from asbestos-related diseases in Wittenoom ?
1,500
2,000
1,000
500
What is the primary function of the ozone layer?
To absorb radio waves
To absorb infrared light
To absorb visible light
To absorb UV light
What is the ozone layer made up of?
Ozone and oxygen
Ozone and carbon dioxide
Oxygen and nitrogen
Oxygen and carbon dioxide
What are the primary culprits in ozone layer breakdown?
Nitrous oxide
Chlorofluorocarbons
Carbon dioxide
Methane
What happens when CFCs are exposed to ultraviolet rays?
They break down into substances that include chlorine
They break down into oxygen
They break down into water vapor
They break down into nitrogen
Where has the ozone layer been impacted by pollution since the mid-1980s?
Amazon
Antarctic
Sahara
Arctic
What banned the production of ozone-depleting substances in 1989?
The Kyoto Protocol
The Paris Agreement
The Montreal Protocol
The Copenhagen Accord
What is the estimated time for chlorine levels to return to their natural state?
25 years
100 years
50 years
10 years
What will happen to the Antarctic ozone hole in about 50 years?
It will disappear completely
It will shrink to smaller than eight million square miles
It will expand to cover the entire continent
It will remain the same size
Where are about 90% of CFCs currently in the atmosphere emitted from?
Natural processes in the atmosphere
Volcanoes and geysers
Developing countries in the southern hemisphere
Industrialized countries in the northern hemisphere
What is implosion in the context of building demolition?
Causing the building to collapse in on itself with explosives
Using a wrecking ball
Progressively disassembling with a high reach arm
Selective removal of building materials
Which technique is considered safer and more precise than using a wrecking ball?
Crane and ball demolition
Implosion with explosives
High reach arm demolition
Selective demolition
What is the primary objective of selective demolition?
To recover reusable and recyclable materials in a safe and cost-effective manner
To cause the building to collapse in on itself with explosives
To disassemble the building with a wrecking ball
To create a lot of dust, vibration, and noise
What is the weight of a typical wrecking ball used in demolition?
5,000 pounds
8,000 pounds
10,000 pounds
13,500 pounds
Why is demolition considered one of the most hazardous occupations in the world?
Due to the high level of noise and vibration
Because it involves the use of explosives
Due to the potential risks to the demolition crew and surrounding areas
Because it creates a lot of dust
