18. Too Much Water, too little Water

TLO:

To write why it is important to drink clean water. To name few water borne disease. To write methods of purification of water.

Points to Ponder:Water is a precious and is very essential for survival.Drinking water should be clean.Boiling water, kills germs, makes it safe for drinking.Drinking unclean water can make us sick and cause disease like jaundice, cholera, diarrhoea etc.When a person suffers from diarrhoea and vomiting, a lot of water is lost from the body.ORS is oral rehydration solution. It is given to the person who is suffering from dehydration.ORS is prepared by mixing a teaspoon of sugar, a pinch of salt in one glass of water.

Give reasons for the following:

a) Use a ladle to take out the water from a container.Reason: To avoid the contamination of drinking water ladle should be used to take out water from a container.

b) A person suffering from vomiting and diarrhoea should be given ORSReason: A Person suffering from vomiting and diarrhoea should be given ORS to regain the loss of water from the body.

c) Tap water should be boiled before drinking.Reason: Tap water should be boiled before drinking to kill germs.

Answer the following:1. How do you prepare ORS?Ans ORS is prepared by mixing a teaspoon of sugar, a pinch of salt in one glass of water.

2. Write any four ways to get clean water.Ans: Water can be cleaned by:a)Filteringb)Adding chlorine tablets.c)Adding alum.d)Boiling

3.What should be done when the person is affected by Diarrhoea and vomiting?Ans: When a person is affected by diarrhoea and vomiting:

Lot of water should be sipped slowly. Light food should be taken. Babies should continue to take their mother’s milk It is also necessary to consult a doctor and take medicines.

4.What can be done to keep the toilets clean?Ans:Pour water before and after using the toilet.

Activity:

Make a poster on Clean Drinking Water and present in the class for discussion.