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Be Prepared for LifeActivity Kit One:
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The human body uses the same amount of energy each day as a medium sized light bulb. In fact most of us use thousands of times this energy each day when we use our stoves and electrical appliances to make our lives more comfortable. This means power stations have to work harder to make more electricity. As more fuel is burnt, our world becomes more and more damaged. Eight 60w light bulbs produce one ton of Carbon Dioxide during their life time. There is no such thing as totally 'clean power' from fuel sources. Often the damage is done far away from our homes where we do not have to see it. We should all try to use energy as sparingly as we can.
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Project 6: Using Sun Power for Water HeatingWarm water is always needed in the home and is expensive to produce. Design a solar heater to produce a regular supply of warm water using simple materials. Prepare a leaflet for your neighbours showing them how to build their own solar heaters. Use you solar heater as much as possible and note how much power and money you are saving.
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Warm water is always needed in the home and is expensive to produce. Design a solar heater to produce a regular supply of warm water using simple materials. Prepare a leaflet for your neighbours showing them how to build their own solar heaters. Use you solar heater as much as possible and note how much power and money you are saving.
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| Bath (1 x 100 mm deep) | 80 litres |
| Shower (3 x 4 min) | 70 |
| Wash basin | 20 |
| Toilet (reduced flush) | 70 |
| Washing machine (5 x per week) | 90 |
| Cooking and drinking | 15 |
| Dish washing | 20 |
| Garden | 50 |
| Total | 415 litres |
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What happens to your dirty water? Where does it go? What does it do?
Drain and sewer water flows to a water treatment plant. Bacteria clean this water so that it can be returned to the river.
When polluted or toxic water arrives at the water treatment plant many bacteria are killed, less water can be cleaned and so polluted water may be discharged into the river or the sea. Water near most treatment plants is heavily polluted and may even have an unpleasant smell. There is usually little river life below a treatment plant.
Nature pays the price - the river dies. People using the river or nearby beaches may become ill.
Project 8: Water Pollutants at Home
Toilet cleaners; Washing powders; Washing-up liquids; Bleaches; Paint; Paint solvents; Dyes in toilet paper; Insecticides; Fertilisers. SOME HINTS FOR A CLEANER RIVERUse plain soap. Avoid detergent washing powders most of which contain chemicals (phosphates and enzymes) which harm river life. Use water-based paint wherever possible. Buy white toilet paper (coloured dyes are also harmful). Use bone meal, wood ash and compost instead of chemical fertiliser. MAKE YOUR OWN INSECTICIDEBoil one cup of tobacco in 5 litres of water for thirty minutes. Strain and add 1 big spoonful of chopped soap to the liquid. Dilute this mixture with an equal quantity of water and apply with a watering can. Wash you hands after use, tobacco contains a powerful poison.
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Part 3: Protect nature at home
| © Copyright 1991 - 1994 Dr Frank Opie for the South African Scout Association |