1 how did the different materials react once dropped in the swirling water?
The food color get mix with the water very fast and it get separate equally.
The coco powder mixed slowly it did not broke up in to the water well and it get separate to side first.
The milk powder is more heavy than other it get mix well and broke down in too water fast and it get separate to the bottom first than to side.

2 did any material behave differently than the others?
coco powder because the other two materials will be mix in to the water completely but coco powder won’t there will always be some powder lifted on the water.

3 how does changing the speed of rotation affect the pattern?
the faster it get the faster the materials separate out and mix.

4 how is this activity similar to galaxy motion.
the faster the galaxy span the bigger it get different type galaxy have different shape and seed it also wheat different.