Transcript What processes cause beaches to form in Bays?

Why do cliffs collapse?
Friday, 17 July 2015
Homework. Due next lesson.
Research and create a case study of Holbeck Hall.
The case study should include:
• Setting the scene
• What happened
• An explanation of why the hotel slid down the
cliff (consider carefully the vocabulary you use)
• The impact on at least three different
stakeholders
To start
c
Questions?
Holbeck Hall in Scarborough
The Holbeck Hall Hotel was a cliff
top
hotel
in
Scarborough,
North
Yorkshire, England. The hotel had scenic views
of the sea and surrounding area.
On 3 June 1993, a landslide began beneath the
hotel. This increased, and finally on 5 June
1993, a day of heavy rain, parts of the building
dramatically fell into the sea, making news
around the world. The remainder of the
building had to be demolished by contractors.
Although it was on a clifftop, an information
board at the top of the cliff states that the
incident was nothing to do with the sea,
blaming it on soil creep.
So what caused the hotel to plunge into the
sea?
Large image
Last lesson we studied how destructive waves erode the base
of cliffs
Cliff collapse can be a rapid and significant problem for some
coastal communities.
This lesson examines the reasons for rapid cliff collapse and
the impact it can have on different stakeholders.
The lesson will continue preparation for the Swanage field
visit.
Coming up
• All pupils can explain sub aerial processes and
mass movement.
• All pupils can explain the impact of cliff
collapse using case studies of Holderness and
Barton on Sea
• All pupils will have prepared to research a case
study of Holbeck Hall.
Vocabulary
•
•
•
•
Mass movement
Sub aerial processes
Geology
Permeable
What is happening on the Holderness Coast?
The Holderness Coast is a classic case study of an area
of rapid coastal erosion. Learning this case study
thoroughly will provide you with the opportunity to gain
good marks in an exam.
Watch the video and make notes on the following:
• Where is the Holderness Coast?
• What is happening to the Holderness Coast?
• Why is the coast eroding at a rapid pace?
Task: What did you find out?
Working in pair:
• Create a spider diagram to describe and explain the factors
that contribute to the rapid erosion of the Holderness Coast.
• How is the erosion affecting stakeholders?
Class feedback
How does each of the following contribute to
the rapid erosion of the Holderness Coast?
•
•
•
•
•
Waves
Weathering
Precipitation
Geology
Human action
What is the impact on named stakeholders?
Task: The Holderness Coast
Write up the Holderness Coast as a case study
It should include:
• The reasons that the Holderness Coast is eroding rapidly
• The impact that this erosion will have on stakeholders.
Suggested stakeholder include:
•
•
•
•
Cliff top home owners
Local authorities
Insurance companies
Communities “down drift” of the erosion.
Task: The Holderness Coast
Write up the Holderness Coast as a case study
The Holderness Coast is eroding quickly for several reasons.
Firstly, large waves are constantly attacking the base of the cliff
meaning that _____________.
The cliffs are made of soft permeable rock which is easy to
___________.
When it rains the water _____________ making the cliff _____ so
that eventually it _____________. This is called ______.
Humans have increased the risk because_____________.
The following groups of people are affected:
Barton on Sea
Study the following sources: do you think Barton on Sea is
likely to suffer from rapid coastal erosion?
Does it matter?
Extra: Read the full story at
http://www.southampton.ac.uk/~imw/barteros.htm
Barton on Sea
Using pages 82 – 83 of the text book create a
case study of Barton on Sea.
It should include:
• The reasons that this coast is eroding rapidly
• The impact that this erosion will have on
stakeholders.
Homework. Due next lesson.
Research and create a case study of Holbeck Hall.
The case study should include:
• Setting the scene
• What happened
• An explanation of why the hotel slid down the
cliff (consider carefully the vocabulary you use)
• The impact on at least three different
stakeholders
Finally
Create a list of key geographical
vocabulary you intend to use in
your homework.