The energy source that moves the red dye and blue dye is most likely the process of diffusion. Diffusion is caused by the random motion of particles driven by thermal energy. As the particles in the dye solution move, they collide with each other and with the solvent molecules, causing the dye molecules to spread out and mix with the solvent. However, it is also possible that another external energy source, such as convection or agitation, is causing the movement of the dye particles.
