Environmental Science : Term 2 Unit 2 : Water
Unit 2
Water
You will learn about
* The journey of rain
* The sources of water
Journey of Rain
Rain Drops
Drip drop drip drop, they drop from the sky
One by one they multiply
Drip drop drip drop, they fall on the ground
Everywhere with a lovely sound
Drip drop drip drop, they seep into the ground
To grow healthy saplings all around
On hot sunny days, they go back to the sky
To come again on another cloudy day
Drip drop drip drop, they drop all the way
To keep all of us happy
complete the sentences using the picture clues.
(rainy, sun, play, bucket, water, happy, plants )
1. It was a rainy day.
2. I could not go out to play
3. I placed a bucket to collect rain water.
4. After sometime, the sun shone again.
5. The bucket was filled with water
6. I watered some plants with it.
7. I felt very happy
water from Glaciers
A glacier is a slow-moving block of ice.
I am a water drop from the snowy mountains. I flow from the glacier when the weather becomes warm.
From the glacier many of us join together to form small streams.
Many mountain streams join together to form a river.
Sometimes rivers or streams flow down as waterfalls.
As a river, I continue my journey across forests, villages and cities. Farmers use me for farming and people use me for drinking, cooking and for other needs. I finally reach the sea.
This is what I do with the water left in my water bottle.
Sequence the pictures by numbering them.
Sources of Water
I am a raindrop. I fall on the earth and fill ponds, lakes and rivers. Rivers flow while lakes and ponds do not Lakes are bigger than ponds.
I fall on the ground and seep underground too. People dig wells and borewells to reach me. They also use pumps to lift me up from the ground. People use me for their needs.
Think! Why do lakes and ponds have less water in summer? Discuss.
water : From the River to the House
River / Lake / Dam → Large pipes → Over head tank → Sump → House water tank → Tap
Do you know: If you have fever, be sure to drink a lot of water; it will help to bring down the fever.
Let Us Discuss
Draw an arrow to indicate the direction of the flow of water/juice
Evaluation
1. Name the pictures
( River, Waterfall, Lake, Pond, Glacier, Sea, Stream, Well, Hand pump )
2. Fill in the blanks.
(sea, rain, hand pump, glacier, waterfall )
1. Rain is the main source of water.
2. A river flows down as a waterfall.
3. A glacier is a block of ice.
4. A river finally reaches the sea.
5. A hand pump is used to lift water from the ground
3. In the crossword, circle the words given below the pictures.
Self Evaluation
* I know about the journey of rain.
* I know about the various sources of water.
* I can identify the sources that supply water to my neighbourhood.