The blog discusses the Questions and Answers from the lesson 16, Water, Environmental Science, Part 1, from Class 5. Students can use these answers for reference in their studies.
Q1. Whats the solution ?
• Soil in a garden gets washed away with the water due to the slope of the land.
Ans. When soil in the garden gets washed away with the water due to slope of the land the following things can be done to prevent this :
1. Place some obstruction like brick or stones on the slope
2. Plant some grass or trees that will hold the soil on the slope.
3.Watering the plants with sprinklers rather than directly with bucket.
Q2. Use your brain power !
• How should roads and footpaths be built to make rainwater seep into the ground ?
Ans. The roads and foothpaths can be built in the following ways to make the rainwater seep into the ground :
1. The roads and the adjacent footpaths should not be completely made of concrete as concrete does not allow water to seep. There
should be some exposed soil in between to allow seepage of water.
2. The foothpaths should be made of small pavement blocks. The gaps in the pavement blocks allow water to seep down into the soil.
Q3. Answer the following questions.
1. What conditions prevail during a famine ?
Ans. During famine the following conditions prevail :
(a) The water level falls in the rivers, wells, lakes, bunds and dams.
(b) The land dries up due to evaporation.
(c) Humans and animals suffer due to scarcity of water.
(d) As there is no water for agriculture grain and fodder become scarce.
(e) People and animals have to face lot of hardships and migrate in search of food and water.
2. What works are undertaken to make water available even after the rainy season ?
Ans. The different works undertaken to make water available even after the rainy season are:
(a) The government or local people come together and work to make rainwater seep into the soil.
(b) Building smaller reservoirs, contour bunding. where dams cannot be made.
(c) Stopping the water of the smaller streams. by constructing bunds or bandharas, etc.
(d) In some places wells are dug in river beds to allow water to collect in them.
(e) Rainwater falling on roofs of houses is drained into large tanks placed beside the building.
3. Why is it necessary to stop rainwater ?
Ans. It is necessary to stop rainwater because :
(a) In such a way the water will be available for use even after the rainy season.
(b) When rainwater is stopped and allowed to percolate in the soil the water level in the ground rises.
(c) Thus more fertile land and water is available for agriculture.
4. What is meant by water management ?
Ans. Water management means stopping or storing water or letting it percolate into the ground to make it available even after the rainy season.
Q4. True or false ? Correct the wrong statements.
1. We get rainwater throughout the year.
Ans. False. We get rainwater only for four months.
2. During a famine, the government moves people and animals temporarily to safe places.