NCERT Solutions for Class 7 Geography Chapter 5 Water

NCERT Solutions for Class 7 Geography Chapter 5 Water Social Science

Here on this page you will get NCERT Solutions for Class 7 Geography Chapter 5 Water will help you find the answers to the questions you've been struggling to solve. These NCERT Solutions will provide you with adequate time to research and work on their assignments. Our experts have tried to make the solutions as easy as possible thus, you will not find any concept difficult to understand.

Chapter 5 Water NCERT Solutions for Class 7 Geography

1. Answer the following questions. 

(i) What is precipitation?

Solution

Precipitation is a type of rain, sleet, snow, or hail that falls from clouds and accumulates on the ground.

(ii) What is water cycle? 

Solution

The process by which water continually changes its form and circulates between oceans, atmosphere and land is known as the water cycle.

(iii) What are the factors affecting the height of the waves?

Solution

Factors affecting the height of the waves: 

(i) Speed off wind

(ii) Duration of wind

(iii) Distance the wind blows over water

(iv) Which factors affect the movement of ocean water? 

Solution

Factors affecting the movement of ocean water:

(i) Temperature

(ii) Earthquake or volcanic eruption

(iii) Gravitational pull of the sun and the moon

(iv) Underwater landslides

(v) What are tides and how are they caused? 

Solution

Tides are the rhythmic rise and fall of ocean water  that occur twice in a day.  The strong gravitational pull exerted by the sun and  the moon on the earth’s surface causes the tides. 

(vi) What are ocean currents?

Solution

Ocean currents are streams of water flowing constantly on the ocean surface in definite directions.

2. Give reasons.

(i) Ocean water is salty.

Solution

The water of the oceans is salty as it contains large  amount of dissolved salts.

(ii) The quality of water is deterioting. 

Solution

The quality of water is deterioting because we get it from polluted water sources. These water bodies are getting polluted due to dumping of untreated wastes, sewage, pesticides, toxicor decayed materials into it. 

3. Tick the correct answer. 

(i) The process by which water continually changes its form and circulates between oceans, atmosphere and land 

(a) Water cycle 

(b) Tides 

(c) Ocean currents 

Solution (a) Water cycle

(ii) Generally the warm ocean currents originate near 

(a) Poles 

(b) Equator 

(c) None of these

Solution (b) Equator

(iii) The rhythmic rise and fall of ocean water twice in a day is called 

(a) Tide

(b) Ocean current

(c) Wave

Solution (a) Tide

4. Match the following.

(i) Caspian Sea	(a) Largest lake
(ii) Tide	(b) Periodic rise and fall of water
(iii) Tsunami	(c) Strong seismic waves
(iv) Ocean currents	(d) Streams of water moving along definite paths
-	(e) Water cycle

Solution

(i) Caspian Sea	(a) Largest lake
(ii) Tide	(b) Periodic rise and fall of water
(iii) Tsunami	(c) Strong seismic waves
(iv) Ocean currents	(d) Streams of water moving along definite paths