Going Elemental

In my Visual Communications class, one of our current projects is to design 4 book covers with Tornado, Earthquake, Volcano and Flood as the themes. They are allowed to be any colour you wish, the only stipulation is that they cannot be representational. It was harder than expected to break away from doing something typical, but during the class discussion, my designs were well received and considered effective. 

These were made in Adobe Illustrator and then further edited in Adobe Photoshop. Initial designs and ideas were in a sketchbook. I tried to keep my ideas within a simple consistent theme, using only basic shape, line and colour to portray each disaster.

Can you guess which is which without looking at the file name?