1. Evaporation: This is the process where liquid water absorbs heat energy from its surroundings, causing the water molecules to gain kinetic energy and break free from the liquid surface to become water vapor. This happens naturally at temperatures below the boiling point. Think of a puddle drying up in the sun.

2. Boiling: This is a more intense form of evaporation where water is heated to its boiling point (100 degrees Celsius or 212 degrees Fahrenheit). At this point, the water molecules have enough energy to rapidly change into vapor, creating bubbles that rise to the surface.