Application of pressure in liquids practice exercise 3

 A driver notices the car’s braking distance has increased. Using the principle of pressure in liquids, explain two possible causes related to the hydraulic braking system. (2 marks)

 An overhead tank is placed 5 metres above the highest tap in a house. Explain how the height of the tank affects the water pressure at the tap and how raising it to 8 metres would change the water flow. (2 marks)

A dam has two water outlets: one near the surface and one near the base. Which outlet would produce faster flow and why? (2 marks)

A farmer uses a siphon to transfer water from a raised tank to a garden bed below. The siphon works well at first but stops after a while. Suggest two possible reasons for this problem and explain your answers. (2 marks)

A handwashing station with a container placed just above the tap has very slow water flow. Suggest a way to improve the water pressure without using electricity. (1 mark)

A shopkeeper wants to design a cooking oil dispenser that pours oil faster without shaking the container. Using the principle of liquid pressure, suggest one modification to the design and explain why it would work. (2 marks)

A student tries to drink thick mango juice through a straw but finds it harder than drinking water. Using the concept of pressure differences, explain why. (2 marks)

A student wants to inflate a bicycle tyre using this pump. Describe the steps the student should follow and explain, using the principle of pressure in liquids, how air is forced into the tyre. (2 marks)

A student wants to inflate a bicycle tyre using this pump. Describe the steps the student should follow and explain, using the principle of pressure in liquids, how air is forced into the tyre. (2 marks)

A water tanker is delivering water to a school. The hose from the tanker is connected to an elevated storage tank 2 metres above ground. The flow is slow. Suggest two practical ways to increase water flow using the principle of liquid pressure. (2 marks)

The diagram below shows a perfume bottle. When the pump button is pressed, perfume is sprayed out as a fine mist. Explain how the design of the spray bottle uses the principle of pressure in liquids to work. (2 marks)

The diagram below shows a perfume bottle. When the pump button is pressed, perfume is sprayed out as a fine mist. Explain how the design of the spray bottle uses the principle of pressure in liquids to work. (2 marks)