An interesting story..... 29 000 little ducks went out one day, over the hills and far away....
Another marvelous demo:
block of ice with blue food colouring one end, warm water (red colouring the other)
What is happening here is the blue block of ice is ........(complete this sentence)
Now have a look at this crazy brinicle video...
Now go to the Ocean (deep) circulation PowerPoint
And once you have done that we can have a go at doing a mind map using Bubbl.us , to help here is a list of words we should know