Geography

Drainage

Question:

Describe the following drainage patterns of streams:
(i) Radial
(ii) Dendritic
(iii) Trellis (iv) Rectangular pattern

Answer:


① Dendrite pattern:
It consists of a single main stream with tributaries resembling the branches of a tree. It develops when the river channel follows the slope of the terrain. e.g. Ganga

② Trellis Pattern:
When tributaries join the main stream at right angles, a pattern is called trellis. A trellis drainage pattern develops where hard and soft rocks exist parallel to each other. For example the Narmada.

③ Radial Pattern:
In this pattern, the streams flow in different directions from a central peak or dome like structure forming a radial pattern.

④ Rectangular Pattern:
It develops on a strongly joint rocky terrain. In this, the main stream and its tributaries join at right angles.

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Drainage

Q 1.

Which three rivers system forms the Himalayan river system?

Q 2.

What is special about Sivasamudram?

Q 3.

Give any three differences between peninsular and Himalayan rivers.

Q 4.

Name the two Himalayan river systems.

Q 5.

Name the four groups of river systems found in India?

Q 6.

Name the long rivers which flow west and form esturies.

Q 7.

How are the West flowing rivers different from the East flowing rivers of Peninsular Plateau? Give any three points of distinction.

Q 8.

Describe the three main features of river Brahmaputra.

Q 9.

Where does river Narmada originate? Name any two picturesque locations formed by it.

Q 10.

Describe the following drainage patterns of streams:
(i) Radial
(ii) Dendritic
(iii) Trellis (iv) Rectangular pattern