Headlands. and bays. http://www.flickr.com/photos/anthonythomas/3085961629/. Waves attack the coastline. Harder rock. Softer rock. Harder rock. This area is now more sheltered, this encourages deposition and beaches are formed. Harder rock. Harder rock.
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This area is now more sheltered, this encourages deposition and beaches are formed.
The softer rock is eroded by the sea- forming a bay.
The more resistant rock is left sticking out into the sea called a headland.
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.
Headlands and Bays- Scarborough the waves- the
Stack formation… the waves- the
This is a chalk the waves- the headland.
Hydraulic action will exploit these weaknesses.
Because chalk is a sedimentary rock, lines of weakness run throughout the headland.
Between the waves- the low and high tide, waves will attack the base of the headland.
The process of corrasion will undercut the base of the cliff, forming a wave cut notch.
The undercutting by the waves- the corrasion will make the cliff unstable.
This creates small caves which are enlarged over time by erosion.
Caves the waves- the develop on either side of the headland.
These caveserode back through the headland and meet, forming an arch.
Continued the waves- the erosion at the base of the arch will cause the roof to become unstable.
It may collapse leaving a stack.
Continued the waves- the erosion of the base of the stack may lead to its collapse, resulting in a stump.
Pop-up headland.. the waves- the
1 the waves- the
You need your template. This will represent a chalk headland.
2 the waves- the
Using a blue crayon- shade the outside horizontal strips- these represent the sea.
3 the waves- the
Using a green crayon- shade the middle horizontal strip- this represents the top of the headland- exposed to weathering.
4 the waves- the
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.
5 the waves- the
Don’t cut off your stump!
Carefully cut out all the black areas on the template- with the exception of the wave-cut notch.
6 the waves- the
It should look like this...
7 the waves- the
Using a ruler, carefully fold the horizontal lines.
8 the waves- the
9 the waves- the
Glue along the two blue horizontal strips- on the reverse!
10 the waves- the
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.
11 the waves- the
Carefully practice folding the model... are the folds the right way?
12 the waves- the
Finally, glue the final blue strip down. Practice the positioning first...
13 the waves- the
Gently close your book...
14 the waves- the
4 the waves- the