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'We value water as a precious natural resource on which the quality of life depends.' (i) Explain the function of the following parts of the cold-water system shown above: - stopcock - ball valve (ballcock) - overflow pipe - Leaving Cert Home Economics - Question 1(a) - 2018
Question 1(a)
'We value water as a precious natural resource on which the quality of life depends.' (i) Explain the function of the following parts of the cold-water system sho... show full transcript
Worked Solution & Example Answer:'We value water as a precious natural resource on which the quality of life depends.' (i) Explain the function of the following parts of the cold-water system shown above: - stopcock - ball valve (ballcock) - overflow pipe - Leaving Cert Home Economics - Question 1(a) - 2018
Step 1
Explain the function of the following parts of the cold-water system shown above: stopcock
Answer
The stopcock is a special valve located on the service pipe outside the house or under the kitchen sink. It allows the water supply to be shut off in case of emergencies or maintenance issues, ensuring control over the flow of water into the home.
Step 2
Explain the function of the following parts of the cold-water system shown above: ball valve (ballcock)
Answer
The ball valve, or ballcock, regulates the water level in the tank. It floats on top of the water and operates a mechanism that opens or closes the water supply when the tank reaches a desired level. When the water level drops, the valve opens to refill the tank and closes when the appropriate level is reached.
Step 3
Explain the function of the following parts of the cold-water system shown above: overflow pipe
Answer
The overflow pipe is designed to prevent flooding. It allows excess water to exit the tank if the water level exceeds a certain point, which can occur if the ball valve malfunctions. This safety feature helps to protect the home from water damage.
Step 4
Describe each of the following stages in the water treatment process: (a) screening
Answer
Screening is the initial step in the water treatment process. It involves the removal of large debris and floating materials such as leaves, twigs, and other contaminants that could damage equipment or hinder subsequent treatment processes.
Step 5
Step 6
Describe each of the following stages in the water treatment process: (c) fluoridation
Answer
Fluoridation involves adding fluoride to the water supply to enhance dental health. It helps prevent tooth decay by strengthening tooth enamel and is commonly practiced in many municipal water systems.
Step 7
Describe each of the following stages in the water treatment process: (d) testing
Answer
Testing is a crucial final step where the treated water is evaluated for quality and safety. Samples are analyzed to ensure that they meet health standards, confirming that the water is safe for human consumption.
Step 8
Outline four ways of conserving water in the home
Answer
- Toilet: Install a dual flush toilet, which offers two options for flushing: a lower volume for liquid waste and a higher volume for solid waste.
- Taps: Use aerators on taps to reduce water flow while maintaining pressure, minimizing waste during handwashing and other activities.
- Shower: Shorten shower times and consider using a low-flow showerhead to significantly reduce water usage in daily routines.
- Laundry: Only run washing machines with full loads to maximize water efficiency and reduce the number of cycles needed.