Geography coursework. i have to make a hypothesis
2006-10-29 06:00:05 · 7 answers · asked by COYS! 2 in Science & Mathematics ➔ Geography
Stony beaches usually have a steeper gradient and are usually indicative of high energy wave action. Sandy beaches are less permeable than pebble beaches so the backwash is stronger in the swash zone and will drag more sand down the beach face where as in a pebble beach (or storm beach) the up rush deposits pebbles which are not dragged back down due to lower backwash. Also the shapes of the pebbles will have an effect on the beach profile. Sandy beaches are saturated more and the waves can wash further landward until the sand is backed up against a solid object.
2006-10-29 11:09:48 · answer #1 · answered by no1drakey 1 · 0⤊ 0⤋
if you mean as opposed to a steep gradient that is because there are places the tide washes away, that is called coastal errosion, and in those places cliffs or stony beaches form as the sea washes out the lower layers then the upper layers fall into the sea.
Sandy beaches are where the tide washes things to the land, not away, and most of what gets washed up is sand.
2006-10-29 14:10:27 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Because a steep sandy slope falls down.
2006-10-29 19:57:14 · answer #3 · answered by lordandmaker 3 · 0⤊ 0⤋
Erosion caused by tidal movement.
2006-10-29 14:11:32 · answer #4 · answered by brogdenuk 7 · 0⤊ 0⤋
Not all sandy beaches do.
2006-10-29 14:02:21 · answer #5 · answered by letem haveit 4 · 0⤊ 0⤋
To stop you from slipping...Dummy
2006-10-29 14:09:22 · answer #6 · answered by Derryman 1 · 0⤊ 0⤋
If they didn't they'd be cliffs!
2006-10-30 03:43:41 · answer #7 · answered by cymry3jones 7 · 0⤊ 0⤋