Water CycleWater Cycle

KMS 6KMS 6thth Science Science

Schriner & LittlejohnSchriner & Littlejohn

Starter: Using pictures and Starter: Using pictures and words define the following words define the following

in your notebookin your notebook Water CycleWater Cycle EvaporationEvaporation CondensationCondensation PrecipitationPrecipitation TranspirationTranspiration

Water CycleWater Cycle

Amount of H2O on Earth does not Amount of H2O on Earth does not changechange

Water changes forms & locationWater changes forms & location

Oceans, Lakes, Rivers, Oceans, Lakes, Rivers, etcetc

97% of Earths water is in Oceans97% of Earths water is in Oceans Water molecules near surface of Water molecules near surface of

Oceans, Lakes, Rivers, etc gain Oceans, Lakes, Rivers, etc gain enough Energy from the Sun to enough Energy from the Sun to become Water Vapor (Evaporation)become Water Vapor (Evaporation)

The salt and other elements remain The salt and other elements remain in oceanin ocean

Evaporation – Factors Evaporation – Factors EffectingEffecting

Temp of AirTemp of Air Temp of LiquidTemp of Liquid WindWind Surface AreaSurface Area Type of LiquidType of Liquid

Transpiration & Transpiration & PerspirationPerspiration

Transpiration- Transpiration- plants release plants release waterwater

Perspiration – Perspiration – animals release animals release waterwater

CondensationCondensation As water molecules As water molecules

cool they come cool they come back together and back together and form water form water dropletsdroplets

Condensed water Condensed water forms cloudsforms clouds

Ex. Water on cold Ex. Water on cold soda can or soda can or windowwindow

PrecipitationPrecipitation

When the water Drops become so When the water Drops become so heavy they fall out of sky (Rain, Hail, heavy they fall out of sky (Rain, Hail, Snow)Snow)

Most Precipitation falls on the Most Precipitation falls on the OceansOceans

RunoffRunoff

Surface runoff can Surface runoff can be generated be generated either by either by rainfall or by the melting or by the melting of snow or of snow or glaciers.glaciers.

CollectionCollection

Water collects in lakes, rivers, pondsWater collects in lakes, rivers, ponds

GroundwaterGroundwater

Water that has percolated Water that has percolated undergroundunderground

Research TopicsResearch Topics

Water Supply & Demand (p. 91)Water Supply & Demand (p. 91) Conserving Water (p. 92)Conserving Water (p. 92) Fresh Water for the Future (p. 93)Fresh Water for the Future (p. 93) Human Waste Pollution (p. 99)Human Waste Pollution (p. 99) Industrial Waste Pollution (p. 100)Industrial Waste Pollution (p. 100) Agricultural Waste Pollution (p. 102)Agricultural Waste Pollution (p. 102) Runoff Pollution (p. 102)Runoff Pollution (p. 102) Cleaning up Pollution (p. 103)Cleaning up Pollution (p. 103) Preventing Pollution (p. 103)Preventing Pollution (p. 103)