MarilynWebster Water Lesson 2 Learning outcomes: To understand how the water cycle works. To find out about the distribution of rainfall To identify places in the world and recognise that some places receive more rainfall than others. Information for teachers can be found in the notes section at the bottom of each slide.

MarilynWebster The water cycle Over 2/3rds of the earth’s surface is covered with water, but less than 1% is fresh water for drinking. Fresh water is a scarce resource and is fast becoming a political issue in the developing world.

MarilynWebster Water cycle new words! Evaporation Transpiration Condensation Precipitation Water changes from liquid to vapour Water falling from the sky in any form e.g rain, snow Water given out by trees and plants Water vapour changing back into liquid

MarilynWebster Water cycle diagram Sea Land Evaporation CondensationPrecipitation Transpiration Condensation: Precipitation: Evaporation: Transpiration: Ground water Ground water

MarilynWebster Where in the world is the water? Nairobi Kenya 958mms Timbuktu Mali 231mms Rio de Janeiro Brazil 1082 mms Cairo Egypt 28mms Los Angeles USA 381 mms Tokyo Japan 1523 mms Sydney Australia 1222mms Lima Peru 41mms Alice Springs Australia 252mms New York USA 1092mms Rome Italy 744mms Ulan Bator Mongolia 208mms London England 593mms

MarilynWebster Continents Australia USA South America Europe Asia Africa

MarilynWebster Watery facts! Around 6,000 children (enough to fill 20 jumbo jets) die every day from drinking unsafe water and not having proper sanitation (e.g toilets). Diarrhoea kills 1.8 million children under five every year, but most cases could be prevented. Within 25 years, half the world’s population could have trouble finding enough fresh water for drinking and irrigation (watering crops).

MarilynWebster More watery facts! Long journeys walking to wells and rivers carrying heavy pots of water can cause exhaustion and damage to bones and joints. More than 80 countries with 40% of the world’s population are subject to water shortages. 1 litre of water weighs approximately 2. 2 pounds, about the same weight as a bag of sugar. Children often carry 10 litres of water on their heads over long distances. Many women carry 40 pounds of water on their heads.

MarilynWebster Water quiz – True or false? One flush of a toilet in the developed world uses as much water as the average person in the developing world uses for a whole day’s washing, cooking and drinking. TRUE

MarilynWebster Statement 2 Women in Africa carry on average 20 kgs (40 pounds) of water on their heads. TRUE

MarilynWebster Statement 3 People in America and the UK pay more for their water than people in developing countries FALSE

MarilynWebster Statement 4 Diarrhoea kills 1.8 million children under five each year it cannot be treated. FALSE

MarilynWebster Statement 5 95% of the world’s population has a tap in their home. FALSE

MarilynWebster Statement 6 Washing with soap and water can cut illnesses by more than 40%. TRUE

MarilynWebster Statement 7 Within 25 years half the world’s population could have trouble finding fresh water for drinking. TRUE

MarilynWebster Statement 8 On average people in the developing world use litres of water every day. In the developed world people use on average 20 litres of water every day. FALSE

MarilynWebster Statement 9 Carrying heavy loads of water over long distances will affect a woman’s health TRUE

MarilynWebster Statement 10 In developing countries it is mainly the men and young boys who collect and carry the water. FALSE