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Water - PowerPoint PPT Presentation

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Water
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  1. Water • based on QCA • Unit 11 1 of 33 © Boardworks Ltd 2006

  2. Water Contents • Finding water • Moving water • Who uses water and why? • Clean water • Who owns the water? • Review 2 of 33 © Boardworks Ltd 2006

  3. Finding water

  4. Finding water On this map, we can see water features such as a reservoir, weirs, streams and rivers. Try looking at a map of your local area. What water features can you see? There may be more than on this map of Oxford, or there might be less. It all depends on where you live and what the weather is like. How does the weather in Britain compare to other countries?

  5. Finding water

  6. Finding water

  7. Finding water

  8. Finding water

  9. Water Contents • Finding water • Moving water • Who uses water and why? • Clean water • Who owns the water? • Review 9 of 33 © Boardworks Ltd 2006

  10. Moving Water Water is very important. Everybody needs water. So how do we move it around so that we can all get to it? Indoor pipes Taps Drains Guttering Have a look round your school. Can you see any of these things? Make a map of your school and mark on all the things that move water around the building.

  11. Moving Water

  12. Moving Water Pipes are a good way of moving water because nothing can get into the water like dirt or germs from animals. Pipes are quite strong, so there is less chance of losing water through a leak. But what did people do in the past? This is a Roman aqueduct in Spain. It was built to move water over 2,000 years ago. And it still works! We also know that the ancient Egyptians used irrigation to move water from the Nile to their farmland. Can you find out about irrigation?

  13. Water Contents • Finding water • Moving water • Who uses water and why? • Clean water • Who owns the water? • Review 13 of 33 © Boardworks Ltd 2006

  14. Who uses water and why?

  15. Who uses water and why? How much water is used in your home? Try to keep a water diary for a whole week. Ask your family to… …watch the washing… …follow the flush… …tally the tea… …just keep track of everything!

  16. Who uses water and why?

  17. Who uses water and why? Why do you think we should be careful about how much water we use? In the last few years, there has been less rainfall in many areas of the world, including the UK. Less rain means there is less water for everyone. There are also more people now than there were a few years ago! In 2001, there were 58.7 million people in the UK. In 2005, there were 60 million people! Oi! Move over! No! You move over! We all need to make sure we save water so that there is enough for everyone to use.

  18. Water Contents • Finding water • Moving water • Who uses water and why? • Clean water • Who owns the water? • Review 18 of 33 © Boardworks Ltd 2006

  19. Clean water

  20. Clean water In the past, many people died from diseases like cholera, dysentery and typhoid. People used to throw their rubbish in the streets. Everything would rot and smell really bad, especially in summer. People believed it was the bad smell that made them ill. Between 1831 and 1866, there were many outbreaks of cholera across the country. Over 122,000 people died. People then began to think that the diseases might be linked to their water supply.

  21. Clean water We now know that these kinds of diseases are caused by dirty water. You can’t tell if water is infected just by looking at it. The germs are microscopic. In the past, people used to get their water from rivers, just as we do. But they also dumped their rawsewage in the rivers! The sewage infected their drinking water, and people got ill easily. But now, we make sure our water supplies are treated and cleaned.

  22. Clean water

  23. Water Contents • Finding water • Moving water • Who uses water and why? • Clean water • Who owns the water? • Review 23 of 33 © Boardworks Ltd 2006

  24. Who owns the water?

  25. Who owns the water? What about water? Can anyone own rivers or rain? In this country, there are many water companies which supply different parts of Britain with water. These companies all charge us to use the water. But why do they charge us and how much do we pay?

  26. Who owns the water?

  27. Who owns the water? Not everybody can get water as easily as we can though. There are many countries where clean water is scarce. Many people do not have water piped to their homes. Instead, they must walk a long way to reach water. Try lifting a bucket of water. Is it heavy? Imagine having to carry it from a water source that is a long way from home.

  28. Who owns the water? The diseases that people died from in Victorian Britain still affect people in some countries today. Many people suffer from diseases like cholera, dysentery and typhoid because of dirty water. These diseases cause diarrhoea, vomiting and a fever. Water is quickly lost from the body. You can live for a month without food, but without water you will die in less than four days. 6,000 children a day die from diseases they have caught from drinking dirty water.

  29. Who owns the water?

  30. Water Contents • Finding water • Moving water • Who uses water and why? • Clean water • Who owns the water? • Review 30 of 33 © Boardworks Ltd 2006

  31. Water Review 31 of 33 © Boardworks Ltd 2006

  32. Glossary aqueduct a structure for carrying water across land. climate zone an area of the world characterised by its weather patterns cholera an infection of the bowels which causes diarrhoea, vomiting and possibly death. drought an extended time when there is little or no rain. dysentery an infection of the bowels which causes excessive diarrhoea and possibly death. irrigation bringing water to fields so that crops will grow. microscopic things that can only be seen under a microscope.

  33. Glossary raw sewage untreated wastewater. scarce not easy get hold of or find. typhoid a disease causing fever, red spots on the body, severe pain in the bowels and possibly death.