What is the pattern of movement in Longshore Drift?

Question

I am doing a Geography crossword for Homework. I can't answer this question. It is two 3 letter words - can anyone help me!?

Answer 1

Zig-zag.

http://geographyfieldwork.com/LongshoreD...

Answer 2

go on www.bbc.co.uk/bitesize click GCSE then click geography it should be on there if not just leave it or get it off ur friends

Answer 3

ZIG - ZAG

It goes like this;

/I/I/I/I/I/I/I/I//I/I/I/I/I/I/I/I/I/I/...

along the beach.