Physical Features of India Class 9 PPT

 Page 1


INTRODUCTION
• Our country has 
practically all major 
physical features of the 
earth i.e. mountains, 
plains, deserts, plateaus 
and islands.
• You must be wondering 
how these physical 
features have been 
formed. We will learn 
more about major 
physical features of India 
and how they have been 
formed.
Page 2


INTRODUCTION
• Our country has 
practically all major 
physical features of the 
earth i.e. mountains, 
plains, deserts, plateaus 
and islands.
• You must be wondering 
how these physical 
features have been 
formed. We will learn 
more about major 
physical features of India 
and how they have been 
formed.
THEORY OF 
PLATE 
TECTONICS
• Earth scientists have attempted 
to explain the formation of 
physical features with the help 
of some theories based on 
certain evidences. One such 
plausible theory is the “Theory 
of Plate Tectonics”.
• According to this theory, the 
crust (upper part) of the earth 
has been formed out of seven 
major and some minor plates.
Page 3


INTRODUCTION
• Our country has 
practically all major 
physical features of the 
earth i.e. mountains, 
plains, deserts, plateaus 
and islands.
• You must be wondering 
how these physical 
features have been 
formed. We will learn 
more about major 
physical features of India 
and how they have been 
formed.
THEORY OF 
PLATE 
TECTONICS
• Earth scientists have attempted 
to explain the formation of 
physical features with the help 
of some theories based on 
certain evidences. One such 
plausible theory is the “Theory 
of Plate Tectonics”.
• According to this theory, the 
crust (upper part) of the earth 
has been formed out of seven 
major and some minor plates.
• The movement of the 
plates results in the 
building up of stresses 
within the plates and 
the continental rocks 
above, leading to 
folding, faulting and 
volcanic activity.
• Broadly, these plate 
movements are 
classified into two 
types Divergent 
Movement and 
Convergent Movement.
Page 4


INTRODUCTION
• Our country has 
practically all major 
physical features of the 
earth i.e. mountains, 
plains, deserts, plateaus 
and islands.
• You must be wondering 
how these physical 
features have been 
formed. We will learn 
more about major 
physical features of India 
and how they have been 
formed.
THEORY OF 
PLATE 
TECTONICS
• Earth scientists have attempted 
to explain the formation of 
physical features with the help 
of some theories based on 
certain evidences. One such 
plausible theory is the “Theory 
of Plate Tectonics”.
• According to this theory, the 
crust (upper part) of the earth 
has been formed out of seven 
major and some minor plates.
• The movement of the 
plates results in the 
building up of stresses 
within the plates and 
the continental rocks 
above, leading to 
folding, faulting and 
volcanic activity.
• Broadly, these plate 
movements are 
classified into two 
types Divergent 
Movement and 
Convergent Movement.
ON THE BASIS OF 
MOVEMENT 
THERE ARE THREE 
TYPES OF PLATES 
BOUNDARIES.
(a) Divergent boundaries:
Plates move apart, leaving 
a gap between them which 
gets filled up with molten 
rock which oozes from 
below the crust.
Page 5


INTRODUCTION
• Our country has 
practically all major 
physical features of the 
earth i.e. mountains, 
plains, deserts, plateaus 
and islands.
• You must be wondering 
how these physical 
features have been 
formed. We will learn 
more about major 
physical features of India 
and how they have been 
formed.
THEORY OF 
PLATE 
TECTONICS
• Earth scientists have attempted 
to explain the formation of 
physical features with the help 
of some theories based on 
certain evidences. One such 
plausible theory is the “Theory 
of Plate Tectonics”.
• According to this theory, the 
crust (upper part) of the earth 
has been formed out of seven 
major and some minor plates.
• The movement of the 
plates results in the 
building up of stresses 
within the plates and 
the continental rocks 
above, leading to 
folding, faulting and 
volcanic activity.
• Broadly, these plate 
movements are 
classified into two 
types Divergent 
Movement and 
Convergent Movement.
ON THE BASIS OF 
MOVEMENT 
THERE ARE THREE 
TYPES OF PLATES 
BOUNDARIES.
(a) Divergent boundaries:
Plates move apart, leaving 
a gap between them which 
gets filled up with molten 
rock which oozes from 
below the crust.
(b) Convergent boundaries:
Plates move towards each other, causing one to go 
under the other or causing plates to collide 
forming mountains.