8. Annotate your photo
to explain why a
beach is formed
here as we discuss
Depositional Landforms
1. Beaches – wave refraction
9. Beaches – Berms
These show high tide marks
Depositional Landforms
Annotate your
photo to explain
what a berm is
10. 1. Beaches (p24)
• Complete the following sentences.
• Material is carried along the beach by
the process of ………
• The waves that form beaches are ……
• Sandy beaches are found in …
• Pebble beaches are found along …
• In a bay the waves …
• A ‘berm’ is a …….
23. 2. Spits
• Spits form when ______ _______ ______
carries sediment along a coastline. When the
coastline _____ direction , the sea deposits the
material it has been carrying because it meets a
river ____ . The change in water _____ means
that sediment is _______ and a long ridge starts
to form, a ____. At the end of the spit, seasonal
changes in wind direction can create ______
ends. The sheltered area behind a spit is where a
____ marsh develops.
• Use your own words! (p. 25 will help you)
Depositional Landforms
24. DAWLISH WARREN, DEVON
Annotate your map!
Fetch - direction of prevailing winds
(and therefore waves) in approaching
the beach.
Direction of
Long-Shore
Drift.
Short term changes in wind and
wave direction causing the curved
ends to the spit.
Original
Coastline
Salt
Marsh
Fastest current
at the centre of
the river.
River
Estuary
25.
26. How do you think this feature formed?
Depositional Landforms
29. 3. Bars (p25)
• If a spit develops across a ____, it may
build across the two _________ to create
a bar. E.g. Slapton Ley in Devon.
• This only happens if there is no large river
________ as the current would stop the
spit reaching across both sides.
• A fresh water _______ develops as
rainwater catches in it and, over time,
dilutes the _____ water.
Depositional Landforms
30.
31. Bar
• Use your notes to label the main features
of a bar onto your photo and map.
• Extra:
Can you add annotation to explain its
formation?
32. Homework
• Learn all your features of erosion and
deposition for a quick test next lesson.