Absorption here implies a physical process, involving direct contact between materials. The laboratory experiment demonstrated the absorption of oil into the sponge.
Pro Tip 2/3
Porous Materials
When discussing absorption, think of materials like sponge, not solid objects like metal. Cotton has a high absorption capacity for sweat.
Pro Tip 3/3
Not Instantaneous
Absorption describes a gradual process - it takes time for substances to be absorbed. If you water plants too quickly, the soil cannot complete absorption, and water runs off.