some important question about drainage
Answers
1. What is a River System?
Ans. A river along with its tributaries is known as a River System or a Drainage system. Ex. Ganga River System, Indus River System etc.
Q.2. Define the term drainage.
Ans. The term drainage describes the river system of an area.
Q.3. What is a drainage basin?
Ans. The area drained by a single river system is called a drainage basin.
Q.4. What do you understand by the term Water Divide?
Ans. Any elevated area such as a mountain or an upland that separates two drainage basins is called a Water Divide. Ex. Ambala act as a water divide between Indus and Ganga River System.
Q.5. Define the following:
Ans. a. Drainage Pattern
The pattern formed by a river in a drainage basin depending upon the slope of land, rock structure and also climatic condition is referred to as Drainage Pattern.
b. Perennial Rivers
Perennial rivers are those which have water throughout the year. These rivers receive water from rain as well as from melted snow of the mountains. Ex. Ganga, Indus, Brahamaputra.
c. Seasonal Rivers
Seasonal rivers are those which are dependent upon rainfall for their flow. During the dry season, even the large rivers have reduced the flow of water. Ex. Peninsular Rivers like Mahanadi, Godavari, Narmada etc.
Q.6. What are the two types of drainage systems found in India?
Ans. Himalayan and Peninsular river systems.
where the driange is formed
is there any organisms which are causing driange
wt is driange
how we can control this drianges