Posted on Sunday, October 14, 2007, at 12:53 AM
omgoddddddd .i didn't study la .
damn it .....
feel so guilty .
didn't have the mood to man .
so shag uh .
went bugis for steamboat .
feel like eating .
so ya , now i feel like vomiting .
hah .
ate alot .
whatever .
HOWEVER ,
how on the way there i did some revision .
read my geo notes .
constructive waves :
powerful swash than backwash ,
longer wavelength shorter wave height ,
on gentler slope .
cause more of construction of coast due to deposition .
4 erosions :
hydraulic action :
when the weight of the wave hit the coast ,
it weaken and loosen rocks , and ultimately break off .
the water also surges in the cracks of the rocks , tightly compress the air .
the compressed air , exert pressure on the line of weakness of the rock .
when the wave retreat , there is a release of the pressure .
the trapped air will then exert force on the line of weakness , cause it to widen and
weaked , ultimately breaking apart .
abrasion [corrasion] :
wave bring along stone pebblea and gravels .
when the wave hits the coast ,
the materials act like a chisicilling tools ,
breaking the rocks of the coast .
this is the most agressive erosion .
attrition :
solution : chemical reaction .
haha . that's all i remember uh .
thats what i studied .
:D
oh well .
tommorrow then chiong ?
see how uh .
8 more days to o's .
yea .