OCR B 2014 Geography controlled assessment booklet for Hengistbury Head.

1. Year 10 Geography Controlled Assessment
OCR B GCSE Geography
“To what extent is geology the main influence on the
distinctive coastal landforms at Hengistbury Head and
Mudeford Spit?”
Name ______________________________________________
Teacher ______________________________________________
Tutor group ______________________________________________
1

2. “To what extent is geology the main influence on the distinctive coastal landforms at
Hengistbury Head and Mudeford Spit?”
Key questions
1
What does distinctive mean and what distinctive features are
at Hengistbury Head?
2
What are the distinctive coastal landforms at Hengistbury
Head and how are they unique?
3
4
5
2

3. 3

4. Suggested reading
Title Author / Source What information did you find here?
Hengistbury Head –
Explore, Learn,
Discover
www.visithengistbury
head.co.uk
Hengistbury Head
Local Nature Reserve
http://bit.ly/1wdCvD9
Hengistbury Head
Geology
www.hengistbury-head.
co.uk/hengistbu
ry-head-geology.php
Hengistbury Head
Geology Guide
www.hengistbury.ukf
ossils.co.uk/geology-guide.
asp
4

5. MAP 1. Ordnance Survey map (1:25 000) of study area
Annotate WHERE you do the different field techniques on here.
5

6. Google Earth satellite image of study area
6

7. Alluvium & clay.
Tidal flats. Marsh &
river deposits.
Formation of islands.
Ironstone quarry & tip.
Cliffs with ironstone
deposits. Routinely mined in
Victorian era. Formation of
quarry pond due to
excavation & landslips.
http://mapapps.British Geological Survey map of study area bgs.ac.uk/geologyofbritain/home.html 7

8. So which factor do you think is the
main influence? Why?
GEOMORPHIC PROCESSES:
e.g. erosion, deposition,
transport (longshore drift)
What does it do?
How influential?
COASTAL MANAGEMENT:
What does it do?
How influential?
GEOLOGY:
What does it do?
How influential?
8
What factors can
influence the
landforms (beach,
headland, spit) and
how do they?

9. Data Method Limitations Solutions
Links to key
question
Beach profile
Exposed
Groyne Height
Measurement
9
Methodology grids

10. Data Method Limitations Solutions
Links to key
question
Sediment
Sampling
Land use /
coastal
management
map
10

11. Data Method Limitations Solutions
Links to key
question
Local geology
map & geology
cross-section
Field Sketches
11

12. Data Method Limitations Solutions
Links to key
question
Photographs
(Add any other
technique you do in
here, e.g.
questionnaire) 12

13. Sketch Map 1: Land use & Coastal Management
13

14. Sketch Map 2: Geology & Geomorphic Processes
14

15. Sketch Map 3:
15
Sketch any other information you feel relevant here.
Remember – be independent, have your own ideas.

16. ANNOTATED Field Sketch A
16
Location:
Facing direction:

17. ANNOTATED Field Sketch B
17
Location:
Facing direction:

18. ANNOTATED Field Sketch C
18
Location:
Facing direction:

19. Geology cross-section
19
SAFETY:
Stand about 5metres away from
the base of the cliff. Be aware of
falling rocks and in poor weather
stay clear & do not approach the
cliff.
METHOD:
Observe the different layers of the
cliff. Make a sketch to show these
layers. Annotate the sketch to
show the different material, e.g.
ironstone fragments, sandstone,
clay, etc.
You can colour code this back at
school, for now use labels &
symbols.
If you visit the visitor centre or
look at the signs you can find
much more information to answer
this.

20. 1. How often, on average, do you visit this section of coast?
a. Everyday d. Once a year
b. At least once a week e. This is my first time
c. At least once a month
2. Why do you visit this section of coast?
a. Walks along the beach c. Job (e.g. you work in a local café)
b. For some peace and quiet d. Other _________________
3. How important do you feel it is to protect this section of coast from geomorphological processes on a scale of 1-5
(1 = not important at all, 5 = very important)
4. What is your opinion on the following statements on a scale of 1-5 (1=strongly disagree, 5=strongly agree)
a. Existing sea defences are necessary d. More sea defences should be put in place
b. The sea defences are unattractive e. The spit should be left to natural processes
c. The beaches have been improved by the sea defences
5.
6.
20

21. Questionnaire Responses
Q1 Q2 Q3 Q4
A B C D E
Q5 Q6
1
2
3
4
5
6
7
8
9
10
21

22. Methodology
*Identify 3 sampling sites across the width of the beach to measure your beach profiles – Mark these clearly on MAP 1 p5
For each Site:-
• Place a Ranging Pole at A (as close to the low-tide mark as safe)
• Identify the key points where the slope angle seems to change (eg. Diagram A below) – use each of these points to
divide your profile into sections
• Measure the distance between point A and B using a measuring tape (Record this in the tables on the next page)
• Measure the slope angle between point A and B using a clinometer (Record this in the tables on the next page)
• Repeat this process for Sections B-C, C-D, etc
Diagram A
22

23. Site 1. LOCATION:
Section Distance (cm) Angle (°)
A-B
B-C
C-D
D-E
E-F
F-G
G-H
Site 2. LOCATION:
Section Distance (cm) Angle (°)
A-B
B-C
C-D
D-E
E-F
F-G
G-H
23

24. Site 3. LOCATION:
Section Distance (cm) Angle (°)
A-B
B-C
C-D
D-E
E-F
F-G
G-H
24
ACTION:
• Make a note on Map 1 to show where you did the beach profile.
• Write down which groynes you are between (e.g. S5 and S6)
• Make a note where you are between the groynes for each profile, e.g. Updrift,
Downdrift, centre of beach.

25. Methodology
Updrift Downdrift
1. Lay out a tape measure running from close to
the water (but not in the sea) right along the beach
at the bottom of the groyne. Note the distance.
2. As close to the sea as is safe, place a metre
ruler on the surface of the beach and estimate the height up to the top of the groyne
to measure the amount that is exposed (uncovered).
3. Work your way along the groyne taking a measurement again every 3metres
4. Repeat the exercise for both updrift (direction waves are coming from) and downdrift of the groyne –
See Diagram B and C – Record this in the table on the next page
Wave Direction
5. Make a note on MAP 1 p5 of where you did the measurement & note which groyne number.
Height of Exposed Groyne
Diagram C
Diagram B
25

26. Distance from
sea
Exposed height of groyne
UPDRIFT (cm)
Exposed height of groyne
DOWNDRIFT (cm)
0m
3m
6m
9m
12m
15m
18m
21m
24m
27m
30m 26
Groyne location / number:

27. Pebble measurement:
• The simplest way to measure pebble shape is to classify the stone as a SHAPE:
very angular, angular, sub-angular, sub-rounded, rounded or very rounded
1. Decide which shape is the best fit for each pebble. Use the grid & codes below.
2. For an estimate of pebble size, measure the longest point (A axis) of each pebble.
3. You should aim for at least 25 pebble measurements from a site
4. Make a note on MAP 1 p5 of where you did the sample.
27
Very
Angular
VR
Angular
A
Sub Angular
SA
Sub
Rounded
SR
Rounded
R
Very
Rounded
VR

28. Pebble shape code
/ longest axis (cm)
Pebble shape code
/ longest axis (cm
e.g. VR / 6
28
Pebble shape code
/ longest axis (cm)
Pebble shape code
/ longest axis (cm
Location of sample:
e.g. between which groynes, updrift/downdrift/centre beach