RBSE Solutions for Class 7 Social Science Geography Chapter 5 Water

Rajasthan Board RBSE Solutions for Class 7 Social Science Geography Chapter 5 Water Textbook Exercise Questions and Answers.

RBSE Class 7 Social Science Solutions Geography Chapter 5 Water

RBSE Class 7 Social Science Water InText Questions and Answers

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Question 1. 
Why is water important for us?
Answer: 
Water is life. We cannot think of survival without water. Its scarcity, may create many problems but its absence must lead to no life on earth. It is a very precibus natural resource of the nature. It quenches our thirst and for every activity we need water like washing, cooking gardening, etc. Industries also need water for their functioning. Thus, water is very essential and we must conserve it.

 

Question 2. 
Suggest some, ways in which water can be conserved in your home and in your school.
Answer: 
Home:
(a) Collect waste water and use it wisely.
(b) Check leaking taps.
(c) Close taps tightly after use.
(d) Rain water harvesting to store water.

School:
(a) Install rain water tanks.
(b) Use unused water in your water bottles to water the plants.
(c) Close taps properly after use.
(d) Use containers to wash your brushes.
(e) Conduct workshops to educate on water conservation.

RBSE Class 7 Social Science Water Textbook Questions and Answers  

Question 1. 
Answer the following questions:
(i) What is precipitation?
Answer: 
Precipitation means falling of condensed water from sky in form of rain, snow, hail etc on the surface of earth when they become too heavy to float in air.

(ii) What is water cycle?
Answer: 
The process by which water continually changes its form and circulates between oceans, atmosphere and land is known 
as water cycle.

(iii) What are the factors affecting the height of the waves?
Answer: 
High speed winds, earthquakes, volcanic eruptions and underwater landslides are the factors which affect the heights of the waves.

(iv) Which factors affect the movement of ocean water?
Answer: 
Factors affecting the movement of ocean water

1. Temperature,
2. Earthquake or volcanic eruption,
3. Gravitational pull of the sun or moon,
4. Under water slides.

(v) What are tides and how are they caused?
Answer: 
The rhythmic rise and fall of ocean water twice a day is called a tide. The strong gravitational pull exerted by the sun and moon on the surface of earth causes the tides.

(vi) What are ocean currents?
Answer: 
Ocean currents are streams of
water flowing constantly on the ocean surface in definite directions.

Question 2. 
Give reasons:
(i) Ocean water is salty.
Answer: 
Ocean water is salty because it contains large amount of dissolved salts. Most of the salt is sodium chloride or common table salt that we eat.

(ii) The quality of water is deteriorating.
Answer: 
The quality of water is deteriorating because we get it from polluted water sources. These water bodies are getting polluted due to dumping of untreated waste, sewage, pesticides, toxic chemicals and decayed materials into it.

Question 3. 
Tick the correct answer:
(i) The process by which water continually changes its form and circulates between ocean, atmosphere and land
(a) Water cycle 
(b) Tides 
(c) Ocean currents
Answer:
(a) Water cycle 

(ii) Generally the warm ocean currents 
originate near: 
(a) Poles 
(b) Equator
(c) None of these
Answer:
(b) Equator

(iii) The rhythmic rise and fall of ocean water twice a day is called.
(a) Tide 
(b) Ocean current
(c) Wave
Answer: 
(a) Tide 

Question 4. 
Match the following:

Answer: