Geo Pg.97 Flashcards
What are the Northern Plains?
The Northern Plains are relatively flat lowland with an elevation of less than 300 m above sea level.
Where do the Northern Plains lie?
They lie between the Northern Mountains and the Peninsular Plateau to the south.
How are the Northern Plains formed?
They are formed by the deposition of alluvium by rivers flowing from the Northern Mountains and the Peninsular Plateau.
What is the thickness of alluvial deposits in the Northern Plains?
The alluvial deposits are hundreds of metres in thickness and form fertile soils.
What is the extent of the Northern Plains?
The Northern Plains extend for a distance of about 2,500 km from the Punjab in the west to the Brahmaputra Valley in the east.
How are the Northern Plains divided?
They are divided into three subdivisions: the Indus Plains, the Ganga Plains, and the Brahmaputra Valley.
Where does the Indus River rise?
The Indus River rises in Tibet beyond the Himalayas.
Where is the majority of the Indus basin located?
A greater part of the Indus basin is in Pakistan.
What forms the Punjab Plains?
The Indus and its five tributaries form the Punjab Plains.
What separates the Indus Plains from the Ganga Plains?
A low watershed separates these plains from the Ganga Plains.
What forms the largest lowland in India?
The Ganga Plains form the largest lowland in India.
Which river drains the Ganga Plains?
The Ganga and its tributaries drain the Ganga Plains.
What is the most important tributary of the Ganga?
The Yamuna is the most important tributary of the Ganga.
Where do the Ganga and Yamuna originate?
Both originate from the Gangotri and Yamunotri glaciers respectively.
What is the slope of the Ganga Plains like?
The Ganga Plains have an extremely gentle slope.
How does the Ganga flow through the plains?
The river flows slowly through many meanders.
What happens to parts of the Ganga Plains during the rainy season?
Parts of the plain are subjected to floods in the rainy season.
What forms the Ganga-Brahmaputra Delta?
In its lower course, the Ganga divides into distributaries to form a delta along with the Brahmaputra.
Where is the Ganga-Brahmaputra Delta located?
The major part of this delta is in Bangladesh, and only a small area lies in India.
What features does the seaward face of the delta have?
The seaward face of the delta has many distributaries and islands.
What is the Brahmaputra Valley?
The Brahmaputra Valley is a relatively narrow lowland extending for about 700 km and a width of less than 100 km.
What deposits make up the Brahmaputra Valley?
The lowland consists of alluvial deposits laid down by the Brahmaputra and its tributaries.
Where does the Brahmaputra originate?
The Brahmaputra originates in Tibet where it is known as the Tsangpo.
How does the Tsangpo enter Arunachal Pradesh?
Tsangpo enters Arunachal Pradesh through a deep gorge at Namcha Barwa.
