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, 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

• Solar
• energy is necessary to power the water cycle.
The Sun

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
•
•
•

•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 H
2
O 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

•

Why?

• http://www.middleschoolchemistry.com/mult imedia/chapter2/lesson3

• Where do we see condensation?

• Clouds
In the air is

Fog
Near the ground is

On just the ground or other surfaces
• Dew

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

What is temperature?

Temp Bpop
• And Gas properties animation

•
•
•

• http://www.wisconline.com/Objects/ViewObject.aspx?ID=sce3
04

- 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
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/conte nt/visualizations/es1904/es1904page01.cfm?chapter_no=vi sualization

http://www.classzone.com/books/earth_science/terc/conten t/visualizations/es1903/es1903page01.cfm?chapter_no=visu alization

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, CO
2,
Ne)

• Create a Pie chart
• Inside each piece instead of coloring, write that letter over and over to fill the space

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

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
Less
Dense
Cool
Air
Less
Pressure
Denser
Warm
Air
More
Pressure

Pressure at different heights
• http://www.classzone.com/books/earth_scien ce/terc/content/visualizations/es1901/es1901 page01.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/barome ter.htm

- Predicting the Weather
Computer Weather Forecasting
• Predicting:
– What weather would you forecast for Monday and
Tuesday? Explain.
– Stormy weather, clouds, and precipitation accompany low air pressure.

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.