When 4 drops of food colouring were added to the water, it spread throughout the water in a moderate speed. During approximately the first 2 minutes, the food colouring moved in a wavy motion travelling downwards to the bottom of the beaker. Soon after, some of the food colouring that had reached the bottom of the beaker had begun to rise back up to the top. The speed of diffusion gradually decelerated as it came to the end of five minutes. The food colouring had been diffused entirely throughout the water. However, the drops of food colouring were not evenly distributed throughout the water leaving the bottom very pigmented and the top a faint shade of red.
