Water vapor is the most important gas for understanding !

Lets learn why we need to dedicate our lives to this fine gas

States of Matter

Sublimation – solid (ice) turns to water vapor.

Deposition – water vapor changes directly to ice.

Phase of State

freezing

How does this relate to the water cycle?

Evaporation

• The process of a liquid turning into a gas

• This requires heat and puts water in atmosphere

• Example: boiling water on a stove or the sun’s heat

Transpiration

• Transpiration is the process where water contained in liquid form in plants is converted to vapor and released to the atmosphere.

• The U.S. EPA estimates that an acre of corn transpires 4000 gallons of water each day.

• We sweat they can too• Greenhouses always steamy

Condensation

• The change from gas to liquid

• Produces the clouds in the atmosphere

• Example: clouds, sweat on pop can, breath in cold weather

Precipitation

• Product of condensation

• Water returning to earth in some state of matter

• Example: rain, snow, hail

What states of matter are seen with precipitation?

Ground Water• Water stored underground between soil and rocks• This water is in natural holding areas that can be

pumped for consumption• Water naturally enters the ground in areas with

grass or soil…..NOT CEMENT• Example: Aquifer, wells

Why is it so important to have forest preserves and other retension areas?

Run-off• Flow of precipitation

from the land to lakes and streams.

• Occurs when ground cannot hold anymore water or when rain goes into storm water storage.

• Example: when glaciers melt, reservoirs, flooding

How can all of this affect your life?