The given diagram illustrates how sand dunes are formed in deserts and on coast by wind power. Overall, the three main stages involved show that sand particles are drifted by wind from dry ground to wet ground where they gather and create sand dunes. In addition, the larger the area of wet ground is, the taller and bigger the sand dunes are formed.
In the first stage, sand grains from dry ground are blown by the wind along the surface until they meet with a wet area of sand, where they are stuck and build up separate piles. As the wind blows, more sand grains are carried towards the formed piles and some of these grains accumulate into a combined and taller pile.
The wind continues blowing and the pile of sand gets taller and bigger and turns into sand dunes. At the same time, sand articles that cannot be cohesive to that sand dune keep on moving until they are stuck by another wet area, where they mount up another dune. The process repeats all over again and many other sand dunes are created.
The
given
diagram illustrates how
sand
dunes
are formed
in deserts and on coast by
wind
power.
Overall
, the three main stages involved
show
that
sand
particles
are drifted
by
wind
from dry
ground
to
wet
ground
where they gather and create
sand
dunes
.
In addition
, the larger the area of
wet
ground
is, the taller and bigger the
sand
dunes
are formed
.
In the
first
stage,
sand
grains from dry
ground
are blown
by the
wind
along the surface until they
meet
with a
wet
area of
sand
, where they
are stuck
and build up separate piles. As the
wind
blows, more
sand
grains
are carried
towards the formed piles and
some
of these grains accumulate into a combined and taller pile.
The
wind
continues blowing and the pile of
sand
gets
taller and bigger and turns into
sand
dunes
. At the same time,
sand
articles that cannot be cohesive to that
sand
dune
keep
on moving until they
are stuck
by another
wet
area, where they mount up another
dune
. The process repeats all over again and
many
other
sand
dunes
are created
.