Knight’s Charge Get into groups of four, do NOT move chairs This is the last chance for student selected groups, if today fails, I have a seating chart ready In your group discuss: “All of my kindness is taken for weakness.” “We forget that the water cycle and the life cycle are one.” - Jacques Cousteau Why you are here today

Water Cycle

H2Awesome Universal solvent- aka it dissolves a lot of stuff Sticky- sticks to itself and others (cohesion and adhesion) Water has a high heat capacity It takes a lot of heat added to raise the temperature of water and a loss of a lot of heat to lower the temperature of water **fun Friday water olympics?

Sun makes it run The water cycle is just the movement of water and the changing of water from one state (solid, liquid, gas) to another The heat from the sun drives the water cycle The water cycle has no beginning and no end, not quite a “cycle”

-Ation Station Evapor-ation Condens-ation Precipit-ation Transpir-ation Accumul-ation Infiltr-ation And…… Runoff…. And so we begin

Evaporation Heat from the sun causes water to change from liquid to gas (water vapor) Contributes about 90% of water vapor to the air

Transpiration Like special plant evaporation Plants have small pore on their leaves These pores “sweat” water in a process called transpiration Contributes 10% of water vapor to atmosphere Quick quiz- what word means to sweat for people?

Condensation When water vapor is high in the atmosphere, it is cooled down it changes from gas back to liquid, forming clouds or fog *clouds can evaporate again- that’s why we can see clouds shrink What would cause a cloud to grow? Quick quiz- examples of water vapor in your life? Fog, fogging glasses, water on iced tea, windows on cold day in the car

Precipitation Condensed liquid water grows “heavy” and falls to the ground There are tons of kinds of precipitation: Rain, snow, sleet, ice, drizzle, mist, etc

Runoff When water hits a saturated (all ready soaked with water) or impervious (water can’t move through it) surface, it flows over the ground Of precipitation that falls on the ground, 1/3 runoffs the land into bodies of water

Accumulation/Surface Water When the runoff ends up in rivers, streams, lakes, ocean, etc, all of which are examples of “surface water”

Infiltration Infiltration is the process of water soaking and seeping into soil and becoming groundwater Different soil=different amounts of infiltration

Groundwater Once water infiltrates through the ground it becomes stored there as groundwater Water that saturates (soaks) the rocks below ground is called an aquifer Do you have well water? Then your water comes from an aquifer!