Thursday, July 27, 2006
wahaha. today's geog lesson was hmm.. interesting?
who knew learning about coastal landforms could be so.. umm. fun.
haha. shall recap my lesson here.
1. prevailing wind- oblique waves create swash- washes up material. backwash pulls back mat. happens in a zig zag manner. there is longshore current too. sorting is coarse to fine.
2. if there is sharp turn in coast. material cont. moving into the sea forms
spit. 3. if spit forms at a bay, waves push it in- forms recurved spit. and mudflats. blah.
4. if spit forms along the path of an island and eventually connects with the island. it is called a
tombolo not a
tombola.5.if spit forms at a bay but the prevailing wind changes in the oppo directn, another spit forms at the other end. both meet= bay mouth
bar.6. walls are built to prevent these wave transportations. these walls are called
groynes which can also be spelt as
groins but mrs Sherwood wants it spelt as
groynes and not as
groins. haha. k i'll stop groyning.
there is a
beach between every two
groynes. so having many
groynes means there will be many mini
beachesstudying for the coastal test on friday will be no prob. (:
Y7:27 AM
