Effects of rusting practice exercise 3

Course: Grade 9 Integrated science - Mixtures, Elements and Compounds - Metals and Alloys

Quiz Questions (14 questions)

Question 1
A bridge in Kilifi built with iron support beams has visible rust. Describe two dangers this rusting poses to the community and explain why urgent action is needed. (2 marks)
Question 2
A bus company in Nairobi is losing customers because their vehicles look old and are breaking down. Explain how rusting may be contributing to this situation. (2 marks)
Question 3
A factory in Thika produces metal roofing sheets. After one year, customers complain about leaks in their roofs. Explain how rusting could be responsible and describe two consequences for the customers. (3 marks)
Question 4
A farmer complains that his tractor has stopped working smoothly. A technician finds that several moving parts are rusted. Explain the impact of this rusting on the farmer’s work and income. (2 marks)
Question 5
A farmer in Kericho notices that the iron bars of his cowshed are rusted. Explain two problems this rusting can cause for the animals and the farmer. (2 marks)
Question 6
A resident of Mombasa has rusted water pipes in their home. Identify two problems they might face because of rusting. (2 marks)
Question 7
A school’s metallic playground equipment is showing signs of rust. Describe two effects this rusting can have on learners using the equipment. (2 marks)
Question 8
The diagram below shows a rusted vehicle body. Explain two effects of rusting to the owner.  (2 marks)
Question 9
Study the table below showing the condition of three machines used in a tea factory in Kericho. Identify the one most affected by rusting and explain the likely effects. (2 marks) Machine Appearance Functionality Notes Q Smooth and shiny Works well Recently serviced R Rust flakes, rough Slow and noisy Not used during rainy season S Dull but no rust Works well Coated with protective paint
Question 10
Study the table below showing the condition of three machines used in a tea factory in Kericho. Identify the one most affected by rusting and explain the likely effects. (2 marks) Machine Appearance Functionality Notes Q Smooth and shiny Works well Recently serviced R Rust flakes, rough Slow and noisy Not used during rainy season S Dull but no rust Works well Coated with protective paint
Question 11
Study the table below showing the condition of three machines used in a tea factory in Kericho. Identify the one most affected by rusting and explain the likely effects. (2 marks) Machine Appearance Functionality Notes Q Smooth and shiny Works well Recently serviced R Rust flakes, rough Slow and noisy Not used during rainy season S Dull but no rust Works well Coated with protective paint
Question 12
Use the diagram showing two gates to explain how rusting affects the gate in home A. (2 marks)
Question 13
Use the diagram showing two gates to explain how rusting affects the gate in home A. (2 marks)
Question 14
Use the diagram below showing two gates to explain how rusting affects the gate in home A. (2 marks)

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