Water Cycle pg 115. Goals for today The water cycle needs energy, where does it get it from? What order does it go in? What are evaporation, condensation,

Water Cyclepg 115

Goals for today

• The water cycle needs energy, where does it get it from?

• What order does it go in?• What are evaporation, condensation, and

precipitation?• What are runoff, infiltration, and

transpiration/evapotranspiration

Notes on pg 115

• The water cycle needs energy, where does it get it from?

• What order does it go in?• What are evaporation, condensation, and

precipitation?• What are runoff, infiltration, and transpiration

The Sun

• Solar• energy is

necessary to power the water cycle.

The 3 basics

• Precipitation• Evaporation• Condensation

Sun warms water causing it to EVAPORATE. Water vapor CONDENSES to form clouds. Clouds become heavy and PRECIPITATE

Evaporation

• Water turns to vapor, which is less dense than air and rises

Condensation

• Water vapor cools down, and turn back into water droplets and clings to dust

Precipitation• Water droplets get too large and fall to the

ground

The extra parts

•Transpiration• Infiltration•Runoff

Transpiration

Runoff

•Now you will be creating a story, rhyming poem or song on pgs 116-117

•Include five of six main parts of the water cycle, underline each part

•20-50 seconds

• There once lived a little water molecule named Henry Harold Olson. His friends called him H2O for short. Today he is celebrating his 4.5 billionth birthday. Just when he was about to turn 4.5 billion years old…

• He was falling, faster and faster and landed on the ground beside a beautiful flower.

• H2O was all shook up, but glad he finally stopped moving. These thoughts came too soon. Before he knew it, has being sucked back down into the ground. He was going through infiltration. He was getting sucked into roots and now was resting inside a beautiful flower. Finally a place he could call home.

• Before he knew it he was transpiring off the flower was rising again. He could see his short lived home getting smaller and smaller below him. He asked his friends what was going on. They said, “We’re going up into the sky! We just evaporated!”

“The next stop in his journey was way up in the sky. He found a friend named Debbie Dust and clung to her. Many of his friends did the same and made a cloud. Now all his friends had condensed and were together again, but then they heard a rumble and began precipitating. Will this ride ever end…

Draw on 115

•Let’s focus on condensation

Why?

• http://www.middleschoolchemistry.com/multimedia/chapter2/lesson3

• Where do we see condensation?

In the air is

• Clouds

Near the ground is

• Fog

On just the ground or other surfaces

• Dew

Left side

• Answer the following question• Why does water cover my glass of ice water?

Sun heating the earth

What is temperature?

Temp Bpop

• And Gas properties animation

How does the sun heat the earth?

The Sun Heats the Earth in 3 ways

•Radiation •Conduction•Convection

• http://www.wisc-online.com/Objects/ViewObject.aspx?ID=sce304

- Heat Transfer

How Heat Is Transferred• Heat is transferred in three ways: radiation,

conduction, and convection.

• When you lay at the beach, how do you experience all three

• Why is it colder on top of a mountain, even though you are closer to the sun?

• On the left side of your ISN you should first draw a picture of the sun and the ground

• Using wavy lines or arrows show the three ways in which the sun heats the earth

Radiation

Conduction

Convection

WINDS

Winds

Winds

Wind is caused by the uneven heating of the earth and the rotation of the earth

2 ways to think of it

• Warm air rises so cold air takes it’s place

• Cold air is heavier and so it pushes down more so it moves. – Balloon pushing down

Bill Nye Wind

Global and Local Winds

Global winds bend at equator because earth is spinning. This is called the corriolis effect

http://www.classzone.com/books/earth_science/terc/content/visualizations/es1904/es1904page01.cfm?chapter_no=visualization

Land Breeze Vs Sea Breeze

http://www.classzone.com/books/earth_science/terc/content/visualizations/es1903/es1903page01.cfm?chapter_no=visualization

Sea Breezes

• Air moves from the sea to the land creating a

• sea breeze• Happens • during the day

Land Breezes

• This causes wind to move from the land to the sea creating a

• land breeze• Happens • at night

Wind Chill?

• Top half – Answer in around 3 sentences. What causes wind

• Bottom half- • Draw a land or sea breeze and label with

arrows, and label hot air and cold air

What is Air made of

Composition of Air

• Air is • 78% Nitrogen (N)• 21% Oxygen (O)• 1% Other gases (Ar, CO2, Ne)

• Create a Pie chart• Inside each piece instead of coloring, write

that letter over and over to fill the space

Air Masses and Fronts

Air Masses

• = body of air with a certain temperature and moisture level

The boundary where unlike air masses meet is called a front.

Fronts• = places where air

masses meet• 4 Types: Warm,

Cold, Occluded, Stationary

• Usually brings precipitation

Fronts and their symbols

http://www.phschool.com/atschool/phsciexp/active_art/weather_fronts/

3 pics to help remember the symbols

• House with triangles icicles• Sun with border on it• Tug of war with shapes on rope

Predicting Weather

What is air pressure

• How heavy the air is• Cold?• Warm?

Different Temperatures - Different Pressures

CoolAir

WarmAir

Denser

MorePressure

Less Dense

LessPressure

Pressure at different heights

• http://www.classzone.com/books/earth_science/terc/content/visualizations/es1901/es1901page01.cfm?chapter_no=visualization

Air Pressure

• How heavy the air is

• Rising = Good• Falling = Bad

Air Pressure

• Measure with tool called Barometer

• http://www.flashscience.com/motion/barometer.htm

Computer Weather Forecasting

– Stormy weather, clouds, and precipitation accompany low air pressure.

• Predicting:

– What weather would you forecast for Monday and Tuesday? Explain.

- Predicting the Weather

Clouds

• Nimbus/Nimbo means Rain– Nimbostratus– Cumulonimbus

Oceans

• Currents off of NJ effect• Effect of Oceans

Jet Stream Effect

- Winds

Jet Streams• The jet streams are high-speed bands of winds

occurring at the top of the troposphere.