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Practice each question, then open the answer or worked solution.
If you wanted to drink some water, from which part of the river would you like to drink? Why?
I would like to drink some water at the place from which the river starts. The water at the beginning of the river is uncontaminated and pure for drinking.
In the last part of the picture, the river flows into the sea. Have you ever seen the sea? Where? In a movie, or somewhere else?
Yes, I have seen the sea. I have seen it in movies also. I once saw the sea when I went to Chennai.
Have you ever been near a river or sea? When?
There is a river in my native, and I visit it when I go there. I saw a sea during my visit to Chennai.
Show with your hands, how the waves in the sea move.
The waves in the sea moves up and down.
Should be done by the students.
Is the water from the sea drinkable? Why?
The water from the sea is not drinkable, as it is saline.
Do you think that there would be changes taking place in a river, pond or stream at different times of the year? What kind of changes would these be? Discuss.
Yes, there would be changes thaking place in a river, pond or stream at different times of the year. The water level would be maximum during the rainy season and would be lesser in the months of April and May.
NCERT Textbook Page No. – 109
Will there be the same amount of water in the ponds or rivers during the rainy season and in summer?
No, there will not be the same amount of water in the ponds or rivers during the rainy season and in summer. Water level will be more in the rainy season and will be lesser in summer.
Is there a pond, river or lake near your town or city?
Yes, there is a pond near my city.
NCERT Textbook Page No. – 109