Class Ten Geography chapter 3 Add Quest answers
Chapter 3: Water Resources (Additional Questions Answers)
Very Short Answer Type Questions. [1 Mark]
1. How is excessive water harmful to us?
Ans. Excess of water is harmful because it may cause a flood, damage crops, kill cattle and negatively impact human life and property.
2. How do we use water in our economic activities?
Ans. In our economic activities, we use water for irrigation, cultivating fish, power generation, and other industrial uses.
3. List the domestic uses of water.
Ans. We use water for drinking, cooking, washing, bathing, washing clothes, etc.
4. From which sources do we receive most of our freshwater?
Ans. We get, most of the freshwater from precipitation (rain, snow); surface runoff (stream, rivers, lakes); and groundwater.
5. How can you prove that water is a renewable resource?
Ans. Water is a renewable resource as it is replenished through the hydrological cycle.
6. What type of resource is water?
Ans. Water is a renewable resource. It is also called flow resource.
7. Briefly describe the process of the water cycle.
Ans. Due to the heat of the sun, water evaporates from water bodies; it becomes vapour and rises up; it cools into water droplets in the stratosphere and drops down as precipitation (rain, snow, hail) on the earth. Some of the water seeps into the ground and much of it flows in streams, lakes, rivers, and seas. Thus, the water cycle is complete.
8. Why did ancient people settle near streams and rivers?
Ans. In ancient times, people settled near river valleys or water bodies because the water was needed for various human activities like drinking, cooking, washing, bathing. They also used raft and boats to travel.
9. What role do permeable rocks and impermeable rocks play in the availability of water?
Ans. Groundwater seeps through the permeable rocks in the ground and impermeable rocks do not allow the water to seep further down the earth. It holds up the accumulated water.
10. Define freshwater.
Ans. Freshwater is the water that is obtained from surface runoff and groundwater. It is continually being renewed and recharged through the hydrological cycle.
11. What are the factors that determine the quantity of freshwater?
Ans. The quantity of fresh water available for human consumption varies from time to time due to the amount of rainfall, rate of evaporation and nature of rocks.
12. List four uses of water for human beings.
Ans. Human beings need water to drink; take a bath; cook food, and wash clothes.
13. What is the prediction of the UN World Water Development Report regarding India?
Ans. It has predicted that large parts of India will join countries or regions having absolute water scarcity by 2025.
14. How much of global precipitation does India receive?
Ans. About 4 per cent of 14. What is the percentage of freshwater and ocean water?
Ans. Freshwater is 2.5 per cent and ocean/seawater is 96.5 per cent.
15. Where would you find most of the world’s freshwater and how much? Ans. Nearly 70 per cent of the world’s freshwater is located as ice sheets and glaciers in Greenland and Antarctica and on mountain tops.