Water Cycle Essay 6th Grade

THE WATER CYCLE

6.E.2A.3 Construct explanations of the processes involved in the cycling of water through Earth’s systems (including transpiration, evaporation, condensation and crystallization, precipitation, and downhill flow of water on land).

Essential Knowledge

Water continually cycles between the atmosphere (troposphere), land, and ocean via the water cycle. The following processes are propelled by sunlight and gravity:

Precipitation
• After condensation occurs (forming clouds), water droplets fall in various forms of precipitation – rain, snow, freezing rain, sleet, or hail, depending upon weather conditions.
• Temperature variations within clouds and/or within the region between the cloud and Earth allows for the various forms of precipitation.
• Gravity is the driving force for precipitation.

Evaporation/Transpiration
• Water enters the atmosphere as water vapor through the processes of evaporation and transpiration (i.e. plants releasing water vapor).
• Thermal energy from the sun causes water to evaporate and/or transpire.

Condensation/Crystallization
• As water vapor rises in the atmosphere it can turn into water droplets or ice crystals which results in cloud formation.
• Condensation of water vapor into water droplets or ice crystals must occur on a surface.
o In the atmosphere, dust particles (or any other particulates) serve as a surface for water to condense on.

• These processes can form on Earth’s surface in the following forms:
o Dew forms when water vapor condenses directly onto a surface;
o Frost forms when water vapor changes from gas directly to ice crystals on a surface when the temperature at which condensing would take place are at the freezing point or below.
Increases in thermal temperature causes water vapor to rise (evaporation) while a decrease in thermal temperature triggers condensation (clouds, dew, and frost).

Downhill Flow of Water on Land
• If precipitation falls on land surfaces, it always attempts to move back toward sea level as surface-water flow or groundwater flow.
• The surface that receives the precipitation determines its flow back towards sea level.
Examples are:
o Water will remain on the surface when the surface is not porous or the precipitation is falling too fast for the water to sink into the ground.
o Water will sink into the ground when the surface is porous and there is space in the soil to hold the water.
Gravity is the driving force for downhill flow of water on land.

Extended Knowledge

• The amount of water on Earth has not changed over Earth’s history. Therefore, pollution can effect this cycle and the organisms that rely on it.
• There are human and natural factors that affect the quality of the water in the water cycle. Students can explore the positive and negative effects that these factors have on organisms that rely on water. These factors can include pollution added to waterways by accidental spills or run-off (from roads and cities).

CLASSROOM RESOURCES

weather_warm_ups.pdf
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weather_warm_ups.pptx
File Size: 606 kb
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Student Packet: Water Cycle & Groundwater-Warm Ups, Vocabulary, Information & Worksheets

weather_standard_6-4.2_water_cycle_student_packet.pdf
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Fortune Teller: Water Cycle 

6-4.2_fortune_teller-water_cycle.pdf
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WATER CYCLE FACTS

Button above is for PC/Mac
Video below for access on iPad:

Button above is for PC/Mac
Video below for access on iPad:

Button above is for PC/Mac
Video below for access on iPad:

Water Cycle Songs

Water Cycle Chant

the_water_cycle_oh_yeah_chant.pdf
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groundwater_animation_video_lyrics.pdf
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CLOUDS & WATER CYCLE VIDEO

 Ms. Sylvester's Science Page

The Water Cycle

Click the link below to view an interactive diagram for the water cycle.
http://water.usgs.gov/edu/watercycle-kids-adv.html_

Click on the link below to view all of the parts of the water cycle.  This page will get you started with "Atmosphere." See the complete list on the left side of the webpage.

Summary of the Water Cycle!

What is the water cycle? What is the water cycle? I can easily answer that—it is "me" all over! The water cycle describes the existence and movement of water on, in, and above the Earth. Earth's water is always in movement and is always changing states, from liquid to vapor to ice and back again. The water cycle has been working for billions of years and all life on Earth depends on it continuing to work; the Earth would be a pretty stale place without it.

Where does all the Earth's water come from? Primordial Earth was an incandescent globe made of magma, but all magmas contain water. Water set free by magma began to cool down the Earth's atmosphere, and eventually the environment became cool enough so water could stay on the surface as a liquid. Volcanic activity kept and still keeps introducing water into the atmosphere, thus increasing the surface- and groundwater volume of the Earth.

The water cycle has no starting point, but we'll begin in the oceans, since that is where most of Earth's water exists. The sun, which drives the water cycle, heats water in the oceans. Some of it evaporates as vapor into the air; a relatively smaller amount of moisture is added as ice and snow sublimate directly from the solid state into vapor. Rising air currents take the vapor up into the atmosphere, along with water from evapotranspiration, which is water transpired from plants and evaporated from the soil. The vapor rises into the air where cooler temperatures cause it to condenseinto clouds.

Air currents move clouds around the globe, and cloud particles collide, grow, and fall out of the sky as precipitation. Some precipitation falls as snow and can accumulate as ice caps and glaciers, which can store frozen water for thousands of years. Snowpacks in warmer climates often thaw and melt when spring arrives, and the melted water flows overland as snowmelt. Most precipitation falls back into the oceans or onto land, where, due to gravity, the precipitation flows over the ground as surface runoff. A portion of runoff enters rivers in valleys in the landscape, with streamflow moving water towards the oceans. Runoff, and groundwater seepage, accumulate and are stored as freshwater in lakes.

Not all runoff flows into rivers, though. Much of it soaks into the ground as infiltration. Some of the water infiltrates into the ground and replenishes aquifers (saturated subsurface rock), which store huge amounts of freshwater for long periods of time. Some infiltration stays close to the land surface and can seep back into surface-water bodies (and the ocean) as groundwater discharge, and some groundwater finds openings in the land surface and emerges as freshwatersprings. Yet more groundwater is absorbed by plant roots to end up as evapotranspiration from the leaves. Over time, though, all of this water keeps moving, some to reenter the ocean, where the water cycle "ends" ... oops - I mean, where it "begins."

The site below site is so cool!  You can click on the link (on the right side of the page) to read the information in your native language!
Directions:  Play the following interactive game called "Thirstin's Water Cycle" then answer the questions on the guided worksheet.

guided_notes_for_the_interactive_game.docx
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water_cycle_vocabulary.pdf
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Study Support- Water Cycle 

Layers of the Atmosphere
http://www.glencoe.com/sites/common_assets/science/virtual_labs/ES14/ES14.html


Layers of the Atmosphere:  Flipbook information
http://www.cpalms.org/Uploads/resources/75516/2/15/docs/Our%20Amazing%20Atmosphere%20Flip%20Book.pdf_
Listen to the water cycle song below:
Sing along with the words on the right.
Water Cycle Song:  By Mr. Parr

Water not working hard?
Yeah right picture that with a flip
And better yet, go to the Troposphere
Take a video of water's trip
Takes a droplet from ground to air
And I just want y'all know that
Water's life, let's enjoy the flight

C.Parr, Teacher, Water Cycle

That's right water droplets are in flight
Water droplets are in flight
It's H2O, from the sky back to the Earth below
Water's in flight

Evaporation
Then Condensation
Precipitation
And Surface Runoff
Cycle of Water, Cycle of Water,
Cycle of Water,

Grab somebody you know and tell them Hey!
Water droplets are in flight
Water droplets are in flight
Water droplets are in flight
Water droplets are in flight

Let's measure it right
Cause the more and more that all the Water Vapor is in
The air so high
Cause the Moisture is seen
And makes Relative Humidity
It is just rain, warm air holds more vapor, water keeps flowing
And cold air resides less H2O in, not flowing
Psychrometer, humidity it's checking

Vapor makes Clouds shapely
Mixes with Dust Particles greatly
Changes warm to cold
And it's quite a sight
Soggy

Molecules
Of water evaporates and then become vapor in flight
And then rises up condenses to form the clouds of white
And it could rain or drizzle, or snow, or sleet tonight
And this repeats tomorrow

That's right water droplets are in flight
Water droplets are in flight
It's H2O, from the sky back to the Earth below
Water's in flight


Evaporation
Then Condensation
Precipitation
And Surface Runoff
Cycle of Water, Cycle of Water,
Cycle of Water,

Grab somebody you know and tell 'em hey
Water droplets are in flight
Water droplets are in flight
Water droplets are in flight
Water droplets are in flight


Under the stars
Cirrus clouds are feathery top of the world
A wispy bit
As you go down Stratus Clouds are all spread out
And when they thicken causing precipitation
Baby, Baby, and it ain't no secret
The lowest one Cumulus puffy and fluffy
Fair weather that is the best

Nimbus means rain, maybe
Add it to the clouds and then
It changes the meaning
By making it rain
Heavily

Molecules
Of water evaporates and then become vapor in flight
And then rises up condenses to form the clouds of white
And it could rain or drizzle, or snow, or sleet tonight
And this repeats tomorrow

That's right water droplets are in flight
Water droplets are in flight
It's H2O, from the sky back to the Earth below
Water's in flight

Evaporation
Then Condensation
Precipitation
And Surface Runoff
Cycle of Water, Cycle of Water,
Cycle of Water,

Grab somebody you know and tell them Hey!
Water droplets are in flight
Water droplets are in flight
Water droplets are in flight
Water droplets are in flight

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