Coastal processes such as erosion and deposition transport sediments along shorelines through wave action and coastal currents. Materials eroded from cliffs and beaches are carried along the coast through processes like longshore drift, which involves the swash and backwash of waves pushing sediments sideways along the shoreline in a zigzag pattern. Transportation of sediments in coastal areas occurs through similar rolling, sliding, bouncing, and suspended load movements as seen in river systems.
2. carry
transport
DEFINITION Wave carry or transport
eroded materials along
its journey
The eroded materials are
called ……….
Sediments
3. By now, You should already
know the four ways how
river transported its load.
Note that transportation
process in coastal areas
are the same as the
transportation process in
the river
4. •Larger particles like boulders and rocks
roll or slide along the river bed by the
strong river flow.
5. •Smaller particles like gravels and stones
are lifted and dropped along the river, so
they bounce along the river bed in a
hopping motion.
6. •Finer particles such as clay, fine sand
and silt are carried along the river without
contact with the river bed.
•Because the river water is moving, the
fine particles or loads are almost able to
float, and they are suspended in the
moving water.
7. •Dissolved materials containing minerals
like limestone rocks are slowly dissolved
by rainwater and are carried away by the
river.
•This type of transportation is difficult to
see with the naked eye but they are in the
water.
9. My life's a single pebble
The tide Pebble the beach,
takes from
Lost among the breakers
The shore is out of reach.
I drift so far from others,
My hope is out of hand,
I’m getting older, smaller-
rolled to a distant land.
I started as a cliff,
And now I’ve turned to sand.
By Mr Pebble
11. Erosion
‘I broke off the cliff’
The waves were crashing under me
,
it was a stormy night.
I could feel everything vibrating,
then suddenly I started to break off,
I tried to hold on, but I was heavy,
I started to fall…….
I landed in….it was cold……
I kept spinning around….
other rocks kept bumping in to
me…
12. Transportation
‘A Bumpy Ride’ ’
Scared and cold I was thrown around by
the oceans force, I was rolling around
the sea floor, other rocks bashing into
me, the waves carried me away further
from my home. …..
rolling, bounced, carried, dropped
13. Long shore drift
Continual swash
Overall and backwash
process of transport
transportation materials
sideways along
the coast
The movement of
materials is Occur in Zigzag
called long shore pattern
drift
