PPT: A River's Tale | EVS for Class 4 PDF Download

 Page 1


A RIVER’S
TALE
Page 2


A RIVER’S
TALE
R iv e r Se a
A river is a flowing watercourse that
starts from a source, typically a hill
or mountain, and ends at its mouth
where it meets the sea, ocean, or a
large lake.
A sea is a vast body of saltwater
surrounded by land.
Page 3


A RIVER’S
TALE
R iv e r Se a
A river is a flowing watercourse that
starts from a source, typically a hill
or mountain, and ends at its mouth
where it meets the sea, ocean, or a
large lake.
A sea is a vast body of saltwater
surrounded by land.
U N D E R S T A N D I N G
R I V E R S
River Color: While water itself is
colourless, rivers often appear bluish
when seen from a distance.
River Source: Every river starts
somewhere. This starting point is
called the source, usually found in
hills or mountains.
Formation: Rivers usually begin as
small streams. These streams join
together to form larger rivers.
Page 4


A RIVER’S
TALE
R iv e r Se a
A river is a flowing watercourse that
starts from a source, typically a hill
or mountain, and ends at its mouth
where it meets the sea, ocean, or a
large lake.
A sea is a vast body of saltwater
surrounded by land.
U N D E R S T A N D I N G
R I V E R S
River Color: While water itself is
colourless, rivers often appear bluish
when seen from a distance.
River Source: Every river starts
somewhere. This starting point is
called the source, usually found in
hills or mountains.
Formation: Rivers usually begin as
small streams. These streams join
together to form larger rivers.
End Point: Eventually,
every river ends
somewhere. The place
where it meets another
body of water is called
the river's mouth.
Mouth Destination:
Rivers discharge their
water into seas, oceans,
or large lakes.
Example: The Nile River
holds the title of being the
world's longest river.
Page 5


A RIVER’S
TALE
R iv e r Se a
A river is a flowing watercourse that
starts from a source, typically a hill
or mountain, and ends at its mouth
where it meets the sea, ocean, or a
large lake.
A sea is a vast body of saltwater
surrounded by land.
U N D E R S T A N D I N G
R I V E R S
River Color: While water itself is
colourless, rivers often appear bluish
when seen from a distance.
River Source: Every river starts
somewhere. This starting point is
called the source, usually found in
hills or mountains.
Formation: Rivers usually begin as
small streams. These streams join
together to form larger rivers.
End Point: Eventually,
every river ends
somewhere. The place
where it meets another
body of water is called
the river's mouth.
Mouth Destination:
Rivers discharge their
water into seas, oceans,
or large lakes.
Example: The Nile River
holds the title of being the
world's longest river.
HOW DOES WATER
BECOME DIRTY?
The vast majority of
Earth's water – almost 98
percent – is contained
within the oceans, which
are enormous bodies of
salt water that cover a
large percentage of the
planet's surface.