Earth Science Grade 5:Earth Science Grade 5:Condensation and EvaporationCondensation and Evaporation

Lisa KirkLisa Kirk

EED 602 (online)EED 602 (online)

Grade 5, Standard Set 3: Earth’s WaterGrade 5, Standard Set 3: Earth’s Water

3. Water on Earth moves between the oceans and 3. Water on Earth moves between the oceans and land through the process of evaporation and land through the process of evaporation and condensationcondensation..

Students know:Students know:

a. Most of Earth’s water is in the oceans, which cover most of Earth’s surface.

b. Liquid water evaporates, turns into water vapor and back into a liquid when cooled or as a solid if cooled below the freezing point of water.

c. Water vapor in the air moves and can form fog or clouds, and can fall to Earth as rain, hail, sleet, or snow.

d. The amount of fresh water located in rivers, lakes, undergroundsources, and glaciers is limited and that its availability can be extendedby recycling and decreasing water use.

e. The origin of the water used by their local communities.

Evaporation, Condensation and Precipitation:Evaporation, Condensation and Precipitation:

The main processes of the water cycleThe main processes of the water cycle

Click on the picture to find out more!!!

EvaporationEvaporation

The transformation of a liquid into a gas.The transformation of a liquid into a gas.

The sun’s heat raising the temperature of The sun’s heat raising the temperature of water and turning it into a gas.water and turning it into a gas.

Water from earth’s rivers, and oceans that is Water from earth’s rivers, and oceans that is heated and travels through the air as a gas.heated and travels through the air as a gas.

Stages of EvaporationStages of Evaporation

1. Water is warmed by the sun

3. Water particles rise as a gas or vapor

2. As the waterheats, it turns into a gas.

Condensation Condensation Water vapor particles rising through the air.Water vapor particles rising through the air. You can't see it, but air contains a lot of water.You can't see it, but air contains a lot of water.    When air gets cold, the water vapor condenses When air gets cold, the water vapor condenses

into clouds.into clouds.

Warm air can hold more water vapor than cold air.  Warm air can hold more water vapor than cold air.  – When warm air holds a lot of water vapor, the air feels When warm air holds a lot of water vapor, the air feels

sticky and damp.  sticky and damp. 

The amount of water in the air is called The amount of water in the air is called humidity.humidity.

The Stages of CondensationThe Stages of Condensation1. Water vapor particles rising

2. Particles forming groups

3. Water particles grouped to form bonds

Precipitation is…Precipitation is…

……the process by the process by which water falls back which water falls back down to earth as rain, down to earth as rain, snow, or hail.snow, or hail.

Depending on the Depending on the temperature, water temperature, water may fall to earth as:may fall to earth as:– liquid (rain), liquid (rain), – semi-solid (snow),semi-solid (snow),– solid (hail)solid (hail)

QuickTime™ and aYUV420 codec decompressor

are needed to see this picture.

Distribution of Water on EarthDistribution of Water on Earth

Most of the Earth’s water is in oceans.Most of the Earth’s water is in oceans. Oceans contain salt water and covers most of the earth’s Oceans contain salt water and covers most of the earth’s

surface.surface. Of the final 1%, only 4/10 of water comes from rivers, a Of the final 1%, only 4/10 of water comes from rivers, a

major source of the water we use.major source of the water we use.

Click on the graph to learn more!

Where is the Water We Use?Where is the Water We Use?

California Water Sources and UsageCalifornia Water Sources and Usage

Much of the water we depend on in Southern California Much of the water we depend on in Southern California comes from sources located in the northern part of the state. comes from sources located in the northern part of the state.

What is Fresh Water Used For?What is Fresh Water Used For?

Recycle and Conserve Water!Recycle and Conserve Water! Reclaimed waste water Reclaimed waste water

frees up fresh water that frees up fresh water that can be used for drinking can be used for drinking water water

California is a good place California is a good place to how reclaimed waste to how reclaimed waste water is being usedwater is being used

The East Bay Municipal The East Bay Municipal Utility District water Utility District water reclamation project saves reclamation project saves about 5.5 billion gallons per about 5.5 billion gallons per year year

BibliographyBibliography

http://http://www.balladtree.com/water.htmlwww.balladtree.com/water.html

http://www.cde.ca.gov./board/pdfscience.pdfhttp://www.cde.ca.gov./board/pdfscience.pdf

http://www.ladwp.com/watersupply/rechttp://www.ladwp.com/watersupply/rec

http://www.metaphor.no/samples_flythrus.htmlhttp://www.metaphor.no/samples_flythrus.html

http://www.naturegrid.org.uk/rivers/graphics/wcmini-ev.gifhttp://www.naturegrid.org.uk/rivers/graphics/wcmini-ev.gif

http://www.schoelles.com/waterhttp://www.schoelles.com/water

http://www.sesd.org/tech/grade5/sciencehttp://www.sesd.org/tech/grade5/science

http://ga.water.usgs.gov/edu/waterproperties.htmlhttp://ga.water.usgs.gov/edu/waterproperties.html