http://www.flickr.com/photos/anthonythomas/3085961629/
Harder rock Harder rock Softer rock Waves attack the coastline.
Harder rock Harder rock Softer rock Harder rock The more resistant rock is left sticking out into the sea called a  headla...
Harder rock Harder rock Softer rock Harder rock Surrounded by deep water and exposed to the full force of the waves- the  ...
 
http://www.flickr.com/photos/rosedavies/534844636/
This is a chalk  headland . Because  chalk  is a  sedimentary rock , lines of weakness run throughout the  headland . Hydr...
Between  low  and  high  tide,  waves  will attack the base of the  headland . HT LT The process of  corrasion  will  unde...
The undercutting by  corrasion  will make the  cliff  unstable. HT LT This creates small  caves  which are enlarged over t...
Caves  develop on either side of the  headland . HT LT These  caves   erode  back through the  headland  and meet, forming...
Continued  erosion  at the base of the  arch  will cause the roof to become unstable. HT LT It may collapse leaving a  sta...
Continued  erosion  of the base of the  stack  may lead to its collapse, resulting in a  stump . HT LT
http://www.flickr.com/photos/sacherfire/217113480/
1 You need your template. This will represent a chalk  headland .
2 Using a  blue  crayon- shade the outside horizontal strips- these represent the sea.
3 Using a  green  crayon- shade the middle horizontal strip- this represents the top of the  headland - exposed to  weathe...
4 Just above the horizontal  blue  lines- shade a  grey  line- make sure it reaches the top of the  wave-cut notch . This ...
5 Carefully cut out all the  black  areas on the template- with the exception of the  wave-cut notch . Don’t cut off your ...
6 It should look like this...
7 Using a ruler, carefully fold the horizontal lines.
8 Like this...
9 Glue along the two  blue  horizontal strips- on the reverse!
10 Position the  green  strip over the centre of your book. Gently glue down the  blue  horizontal strip- the one with the...
11 Carefully practice folding the model... are the folds the right way?
12 Finally, glue the final  blue  strip down. Practice the positioning first...
13 Gently close your book...
14 Magic...
1 2 3 4 5 6 Arty shot...
 
Upcoming SlideShare
Loading in …5
×

Headland Erosion Stack Formation

4,771 views

Published on

Published in: Technology, Sports
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
4,771
On SlideShare
0
From Embeds
0
Number of Embeds
500
Actions
Shares
0
Downloads
95
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Headland Erosion Stack Formation

  1. 1. http://www.flickr.com/photos/anthonythomas/3085961629/
  2. 2. Harder rock Harder rock Softer rock Waves attack the coastline.
  3. 3. Harder rock Harder rock Softer rock Harder rock The more resistant rock is left sticking out into the sea called a headland . The softer rock is eroded by the sea- forming a bay . This area is now more sheltered, this encourages deposition and beaches are formed.
  4. 4. Harder rock Harder rock Softer rock Harder rock Surrounded by deep water and exposed to the full force of the waves- the headlands are eroded . The shallower waters in the bay continue to encourage deposition .
  5. 6. http://www.flickr.com/photos/rosedavies/534844636/
  6. 7. This is a chalk headland . Because chalk is a sedimentary rock , lines of weakness run throughout the headland . Hydraulic action will exploit these weaknesses.
  7. 8. Between low and high tide, waves will attack the base of the headland . HT LT The process of corrasion will undercut the base of the cliff , forming a wave cut notch .
  8. 9. The undercutting by corrasion will make the cliff unstable. HT LT This creates small caves which are enlarged over time by erosion.
  9. 10. Caves develop on either side of the headland . HT LT These caves erode back through the headland and meet, forming an arch .
  10. 11. Continued erosion at the base of the arch will cause the roof to become unstable. HT LT It may collapse leaving a stack .
  11. 12. Continued erosion of the base of the stack may lead to its collapse, resulting in a stump . HT LT
  12. 13. http://www.flickr.com/photos/sacherfire/217113480/
  13. 14. 1 You need your template. This will represent a chalk headland .
  14. 15. 2 Using a blue crayon- shade the outside horizontal strips- these represent the sea.
  15. 16. 3 Using a green crayon- shade the middle horizontal strip- this represents the top of the headland - exposed to weathering .
  16. 17. 4 Just above the horizontal blue lines- shade a grey line- make sure it reaches the top of the wave-cut notch . This represents wave action between high and low tide .
  17. 18. 5 Carefully cut out all the black areas on the template- with the exception of the wave-cut notch . Don’t cut off your stump !
  18. 19. 6 It should look like this...
  19. 20. 7 Using a ruler, carefully fold the horizontal lines.
  20. 21. 8 Like this...
  21. 22. 9 Glue along the two blue horizontal strips- on the reverse!
  22. 23. 10 Position the green strip over the centre of your book. Gently glue down the blue horizontal strip- the one with the stump .- Practice your positioning first.
  23. 24. 11 Carefully practice folding the model... are the folds the right way?
  24. 25. 12 Finally, glue the final blue strip down. Practice the positioning first...
  25. 26. 13 Gently close your book...
  26. 27. 14 Magic...
  27. 28. 1 2 3 4 5 6 Arty shot...

×