TS 6th Class Science Important Questions 11th Lesson Water in Our Life

These TS 6th Class Science Important Questions 11th Lesson Water in Our Life will help the students to improve their time and approach.

TS 6th Class Science Important Questions 11th Lesson Water in Our Life

Question 1.
How is water level in the reservoirs measured?
Answer:
In feet.

Question 2.
How is the water released from dams and projects during floods, measured?
Answer:
In cusecs (cubic centimeters/sec)

Question 3.
How is sea water?
Answer:
Salty

Question 4.
What are the drought-prone areas In our state?
Answer:
Anantapuram and Mahaboobnagar.

Question 5.
Mention a natural hazard.
Answer:
Floods
(Some other natural hazards are – droughts, volcanoes, forest fires, earth-quakes, etc.)

Question 6.
Can we drink the water available ¡n the sea?
Answer:
No. It is not fresh water. Sea water is salty. So we cannot drink it.

Question 7.
Do plants and animals also require water like us?
Answer:
For their survival and growth, plants and animals require water.

Question 8.
What are the main water sources of villages and cities ?
Answer:
Wells, canals, tanks, ponds, rivers, bore-wells are the main water sources in villages and cities.

Question 9.
Explain the stages involved in safe drinking water supply. (or)
Prepare a flow chart showing the different stages of protected drinking water schemes.
Answer:
Stages of safe drinking water supply.

• Water is collected into tank: Untreated water is collected from rivers or lakes into tanks.
• Filtration: The water is filtered through sand particles and grills and then sent to another aerated tank. Nearly 99% of solid wastes are filtered through this process.
• Aeration: Filtered water is exposed to sunlight. As a result some bacteria present in the water bodies will die due to the Sun’s heat.
• Chlorination: Chlorine compounds are used to destroy all the disinfectants present in the water. Now the water is available to be used for drinking.
• Overhead tank: Chlorinated water is pumped into overhead tank before supplying.
• Supply of water: Pure water is supplied to the people through taps.

Question 10.
What is the percentage of fresh water on the earth?
Answer:
One percent

Question 11.
Write the occupancy ratio of the water on the earth.
Answer:
3/4^th of the earth is occupied by water.

Question 12.
Are the sources from where you get water for your daily needs and crop same or not? Give your reasons.
Ans.
For our daily needs, we get fresh water, supplied by the town authoritie under Protected Drinking Water Scheme.’ For the crops, we depend on rains, canals, rivers, bore – wells etc. It is n fresh water.

Question 13.
We know that nearly 314th of the surface of the earth is occupied by water. Is this water useful for us?
Answer:
Although 3/4^th of our earth is covered with water, about 97% of the water available in the seas and oceans is salt water. About 2% of water is in the fon of ice at the poles. This means, only 1% of water on the earth is useful for us. Therefore we should not waste water.

Question 14.
What happens if there is less rain fall or too much rain fall?
Answer:

• If there is less rain fall, there will be scarcity of water.
• If there is no rain for 4 or 5 years continuously, it causes droughts.
• Too much rain fall may cause floods.

Question 15.
What would happen if there was no rainfall of five years?
Answer:

• Severe drought and famine will occur in the area.
• People will face drastic problems such as food and water scarcity.
• Cattle will die due to unavailability of grass or non grazing fields.
• Plants will die and those remaining will enter the jaws of death.
• As a result people will migrate to places with food and water resources.
• Nutritional problems will arise in the children of poor families.

Question 16.
Drought occurred in Ramanna’s village. Guess the problems faced by
Ramanna due to drought.
Answer:
Ramanna faced many problems due to drought.

• For the last five years, there were no rains.
• Their fields dried and cracks developed on them.
• His father invested money on bore – wells with no results.
• Some water they could get from a bore – well lying kilometers away from their village.
• Several people sold their cattle and migrated to distant cities like Hyderabad and Bangalore.

Question 17.
What problems can arise due to water scarcity in a particular place?
Answer:
Loss of harvestation, drinking problems, domestic water problems etc., will arise.

Question 18.
If several bore wells are dug and underground water is tapped constantly what will happen to the source of ground water?
Answer:

• Ground water levels will decrease.
• Soil will lose moist conditions.
• Grass lands will not grow.
• Plants will die due to dryness in soil.
• Soil organisms such as earthworms, useful insects will die due to lack of moisture in the soil.
• People who depend on ground water for drinking and other purposes will face serious problems.

Question 19.
What are the possible and relevant questions you will ask on droughts – water supply?
Answer:

• What will happen if rainfall this year is less than that of last year?
• What would happen if there was no rainfall for five years?
• What could be the possible reasons for water scarcity?
• What problems can arise due to water scarcity?

Question 20.
A student named Virat had a curiosity to know how the water is being supplied to the villages with a govt. scheme i.e. ‘Safe drinking water’. The river water is filtered by separating all the unwanted materials and aerating the water with the process of sprinkling & chlorination. The purified water is then sent to the area tanks, then the purified water is supplied through the pipe lines to the individual houses of that particular areas.
i. What is the process used to separate unwanted materials and microorganisms?
ii. What is the main source of water for village people?
iii. Show the pumping/supplying of purified water in the form of flowchart.
iv. What is meant by safe drinking water?
Answer:
i. Sprinkling and chlorination.
ii. The river water
iii. Tank → Filtration → Aeration → Chlorination → Overhead tank → Taps
iv. The purified water purely free from impurities and microbes useful for drinking is called safe drinking water.

Question 21.
How do polythene bags, and disposable plates cause floods?
Answer:

• The polythene bags and disposable plates do not decompose in the soil.
• They obstruct water flow in canals and drainages during heavy rains and cause floods.
• People become shelterless.

Question 22.
Collect information about ‘cyclones’. In which season do they occur?
Write about effects of cyclones that occur in the coastal area of our state. (or)
Write about the information that you collected on cyclones. In which season they occur? Write about the effects of cyclones in coastal A.P.
Answer:
Cyclones frequently occur in the months of October and November.
Often we see cyclones in the month of May due to high pressure in the atmosphere.
The consequences seen after cyclones:

• Roof tops and houses collapse due to heavy winds.
• Hoarding boards and street light poles collapse.
• Heavy loss of population and death of animals occurs.
• Falling of trees is one of the effects of heavy flood.
• People suffer from heavy damage of property.