Water towers 0 Overview Using this Resource Connecting to the Curriculum Marking Student Responses This task is about forces and water supply. Question 1Change answer a) Many small towns that are built on flat land have water towers like the one shown. Water is stored high up in the tower. a) Many small towns that are built on flat land have water towers like the one shown. Water is stored high up in the tower. What force is being used to help deliver water to the local houses? Question 1Change answer b) On some farms, windmills are used to pump water. What are two advantages of using a wind-powered pump compared to a petrol-powered pump? b) On some farms, windmills are used to pump water. What are two advantages of using a wind-powered pump compared to a petrol-powered pump? 1. 2. Question 1Change answer c) Name one disadvantage of a wind-powered pump compared to a petrol-powered pump. c) Name one disadvantage of a wind-powered pump compared to a petrol-powered pump. Copyright: Image source: Wikipedia, 2008 (c) Otto-Ville Mikkelä | CC BY-SA-3.0 Level: 4 Curriculum info: Science, Knowledge, Physical World Keywords: physics concepts, forces, gravity, energy sources Description of task: Students name the force that delivers water to households from a water tower and then explain advantages and disadvantages of a wind-powered pump compared to a petrol-powered pump. Making Better Sense: Forces Answers/responses: Y8 (10/1997) a) Gravity moderate b) Any 2 of: Cheaper Less pollution Renewable energy source Quieter Safer Any other reasonable advantages, e.g., less maintenance 2 correct – moderate 1 correct – easy c) Any 1 of: Lack of wind could cause problems Less control over the rate of water pumped Not readily portable easy
