1-5
Accumulation
Process of a substance gathering in an area (ex. a lake).
Infiltration
Process of water moving from the ground surface into the soil.
Sublimation
Process of a solid changing directly into a gas without passing through the liquid
phase (ex. Glacial ice turning into water vapor).
Condensation
Process of a gas changing into a liquid (ex. clouds).
Liquid
A state of matter that flows freely but is of constant volume.
Transpiration
Process of water moving through a plant and evaporating out of the leaves,
stem, and flowers.
Evaporation
Process of a liquid changing into a gaseous phase (ex. steam)
Percolation
Process of water slowly moving through a filter (ex. water moving through the
soil).
Water vapor – Water in the gaseous phase.
Water in the gaseous phase.
Expansion
When something spreads, extends, or enlarges (ex. water molecules expanding as
they freeze)
Precipitation
Products of water vapor condensation in the atmosphere that fall to the ground
(ex. rain, snow, sleet, grauple, or hail).
Groundwater
Water held underground in the soil or in pores or crevices in rocks.
Runoff
Process of water draining away from the surface of the land (ex. water that flows off
the land into streams, rivers, lakes, or oceans).