1.7 Water Cycle

Water cycle

Movement of H2O ( In different states) Between sources and sinks

Energy from the ____ Drives the water cycle

sun

• Ex: Heat from sun causes liquid water and ocean to become a gas (Evaporation) In atmosphere

The largest water reservoir

Ocean

Smaller Reservoirs

Ice cap and ground water are smaller reservoirs, but contain fresh usable water for humans

Transpiration

Process plants used to draw ground water from roots up to their leaves

-Leaf openings called stomas open, allowing water to evaporate into atmosphere from leaf

-movement of water out of leaf creates low water potential and leaf pulling water up from root

Evapotranspiration

Amount of water that enters atmosphere from transpiration and evaporation combined

( both processes are driven by energy from the sun)

Runoff

Precipitation (rain) Flows over earths surface into a body of water

Infiltration

Precipitation (rain) Trickles through soil down into ground water aquifers