Nội dung text Class 3 EvS (The World Around Us) Chapter 7- Water – A Precious Gift Book Solution and Notes.pdf
Class 3 EvS (The World Around Us) Book Solution and Key Notes © kvsecontent.com Unit 3- Gifts of Nature Chapter 7- Water – A Precious Gift Key Notes ▪ Rainwater: Water that falls from clouds as rain ▪ Groundwater: Water stored naturally underground between rocks and soil ▪ Well: A deep hole dug in the ground to get water ▪ Tank: A large container for storing water ▪ Water conservation: Careful use of water to avoid waste ▪ Birdbath: A shallow water container for birds to drink and bathe ▪ Pipeline: A series of pipes that carry water from one place to another ▪ Waterbody: Natural places where water collects like ponds, lakes, and rivers 1. Rain and Water Sources ▪ Rain is a natural source of water ▪ Rainwater fills up streams, rivers, ponds, and lakes ▪ Some rainwater goes underground and becomes groundwater ▪ Wells get water from underground water 2. Water Storage ▪ We store water in different containers ▪ Common storage items: buckets, pots, tanks, bottles ▪ Different materials used: clay, plastic, steel, copper ▪ We must store water carefully to keep it clean 3. Ways We Get Water ▪ From taps connected to water pipes ▪ From wells using buckets or pumps ▪ Through water tankers ▪ From nearby rivers or lakes 4. Uses of Water ▪ Drinking and cooking ▪ Washing and cleaning ▪ Bathing ▪ Watering plants ▪ For animals to drink
Class 3 EvS (The World Around Us) Book Solution and Key Notes © kvsecontent.com What happened to the rainwater? Q. What happens to the rainwater on different surfaces? Ans. ▪ On soil: Water gets absorbed ▪ On concrete: Water collects in puddles ▪ On sloping ground: Water flows downhill Q. Is there a stream, river, pond or lake near your village or city? Ans: Yes, there is a river called _______________ near our city. We can see many trees and birds around it. Where do you get water from? Q. Where do you get water from? Ans: We get water from: ▪ Taps in our home ▪ The water tank on our roof ▪ A nearby well ▪ A handpump ▪ A submersible pump Q. List all the activities you can think of for which we need water. Ans. Daily Personal Use: ▪ Drinking ▪ Brushing teeth ▪ Bathing ▪ Washing hands and face ▪ Using toilet Household Work: ▪ Cooking ▪ Washing dishes
Class 3 EvS (The World Around Us) Book Solution and Key Notes © kvsecontent.com ▪ Cleaning house ▪ Washing clothes ▪ Mopping floors Plants and Animals: ▪ Watering plants ▪ Giving pets water ▪ For birds and animals ▪ Growing crops ▪ Maintaining gardens Q. How many mugs of water do you need to brush your teeth? Ans: I use one mug of water to brush my teeth. We should not waste water while brushing. Q. How much water do you use to take a shower? Ans. One mug of water is enough to brush teeth. Use water only to: ▪ Wet toothbrush at start ▪ Rinse mouth after brushing ▪ Clean toothbrush at end Q. Have you ever faced a situation when you did not get any water? What did you do then Ans. If I did not get any water, I would first try to find an alternate source of water, like a nearby tap, well, or stream. Q. One day it happened to Surya and Barkha too. Do you know what they did? Ans. They stored two buckets of water, as the society pipeline had burst that day and they did not have running water. Ask your grandparents or any elder: Q. How did they get water? Did they use water in the same way as you do? Ans. They had to fetch water from a nearby well or river. Q. How they stored water in their time. Ans: My grandparents told me they used to store water in: ▪ Large clay pots (matkas)