Deposition is the process where water vapor changes directly into solid ice without becoming liquid first. This occurs when water vapor loses energy and forms ice crystals, such as frost on cold surfaces.

Sublimation is the process where ice (solid water) directly transitions into water vapor (gas) without first becoming liquid. This occurs when ice absorbs enough energy to bypass the liquid phase.

Water changes from solid (ice) to liquid (water) through the process of melting. When heat is applied, the temperature rises, causing the ice to absorb energy and transition into a liquid state.

Natural grass feels cooler than plastic grass because it undergoes evaporation, which absorbs heat and cools the air. Plastic grass, however, does not evaporate and absorbs and retains more heat, making the surrounding area warmer.