swbat: determine various naturally occurring processes that can occur in new jersey
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Swbat: determine various naturally occurring processes that can occur in New Jersey. DO NOW: WHAT IS THE DIFFERENCE BETWEEN A HURRICANE AND A TORNADO? WHAT IS SIMILAR ABOUT A HURRICANE AND A TORNADO?. New Jersey and Naturally Occurring Processes. Storm sound effectsl \. - PowerPoint PPT PresentationTRANSCRIPT
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Swbat: determine various naturally occurring processes that can occur in New Jersey
DO NOW:WHAT IS THE DIFFERENCE BETWEEN A
HURRICANE AND A TORNADO?WHAT IS SIMILAR ABOUT A HURRICANE AND
A TORNADO?
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New Jersey and New Jersey and Naturally Occurring Naturally Occurring
ProcessesProcessesStorm sound effectsl\
Introduction worksheet: Natural Disasters: Disasters or Blessing.
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Tornado
http://www.bing.com/videos/search?q=twister+movie&view=detail&mid=3004D4C283280E8527AE3004D4C283280E8527AE&first=41
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A tornado is a column of swirling wind: an extremely destructive funnel-shaped rotating column of air that passes in a narrow path over land
Tornadoes are similar to a hurricane in that they both contain destructive circular winds. Differs in that it takes place over land
Spawned by thunderstormsDamage paths can be in excess of one mile wide
and 50 miles long. Every state is at some risk from this hazard.
Before a tornado hits, the wind may die down and the air may become very still.
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Preparing for a tornadoArticle: Science World “Deadly Twister”
To begin preparing, you should build an emergency kit and
make a family communications plan. Listen to NOAA Weather Radio or to commercial radio or
television newscasts for the latest information. In any emergency, always listen to the instructions given by local emergency management officials.
Be alert to changing weather conditions. Look for approaching storms.
Look for the following danger signs: ◦ Dark, often greenish sky ◦ Large hail ◦ A large, dark, low-lying cloud (particularly if rotating) ◦ Loud roar, similar to a freight train. ◦ If you see approaching storms or any of the danger signs, be
prepared to take shelter immediately.
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HURRICANESHURRICANES
ABC video of Hurricane Sandy
http://abcnews.go.com/US/video/hurricane-sandy-jersey-beach-town-water-17602176
Before and after pictures of Sandy
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Hurricanes are a tropical cyclonic storm having minimum winds The English word hurricane comes from Spanish word huracan, which
means great wind
Hurricane watch – means that a hurricane will probably strike your area within the next 24 hours
Once a hurricane watch is issued, it may be too late to take precautions
A hurricane’s low – pressure center of relative calm is called the eye
Hurricanes build energy as they move across the ocean, sucking up warm, moist tropical air from the surface and dispensing cooler air
Wind speeds can be as high as 185mph on coastal areas
Saffir-Simpson scale was established to rank the relative intensities of hurricanes
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EFFECTS:
Flash flooding Loss of vegetation Loss of coastal protection (dunes) Decrease in larval fish and shellfish Major property loss Coastal flooding can cause road runoff and
pollute groundwater supplies Shipwrecks and grounded shipping vessels
could cause oil spills Economic impacts High winds leading to damage of property Severe home damage such as roofs,
windows and doors Water inside homes or buildings
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Prevention Methods:
Stock up on drinking water and supplies Access to working portable radio Board up windows Plan an escape route Maintain a supply of flashlights, candles and kerosene lamps A cell phone with a fully charged battery may be helpful in case of
emergency If you own a boat, move it to a safer place, or tighten your lines If you live in a mobile home, check tie downs and leave
immediately for a safer place
Read Articles about Sandy from Science World and Today magazine
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Ticket to Leave – on loose leafpaper answer these questions
Which does more damage, a hurricane or a tornado?
A storm surge is a giant wave? True/FalseIf we have more sophisticated warning
systems about hurricanes today, why is there more property damage now than in the past? (Think about Sandi)
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Water Erosion
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Water Erosion is the detachment of earth material from surface by long running water
Water is the most important erosional agent and erodes most commonly as running water in streams
There are several types of erosion such as water, wind, ice and wave
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Effects:
Loss of farmland Loss of habitat loss of topsoil roadway damage buildup of sediment where drainage is
necessary Economic impacts
Prevention:
Make sure your water body is surrounded by plenty of trees, shrubs and other plants.
Remove debris and trash from your creek, marsh, stream or other local water body
Keep people, cars and grazing animals away from the edge of the water
Build steps on a ramp between the top and bottom of the bank if you need access to the water
Avoid heavy loads on the top of stream banks or shorelines
Plant and protect vegetation on the slopes of the shorelines and on the areas adjacent to the slope.
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SinkHolesSinkHoles
What do you think: Are sinkholes the same as water erosion?
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What is a sinkhole?What is a sinkhole?
Sinkholes are an area of ground that has no natural external surface drainage- when it rains, all of the water stays inside the sinkhole and typically drains into the subsurface.
They can vary from a few feet to hundreds of acres and from less than 1 to more than 100 feet deep.
They can form so slowly that little change is noticeable or can be sudden and a collapse happens
In NJ East Rutherford a man and his forklift was dragged into a sinkhole.
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Sinkholes have been associated with land use practices, especially from groundwater pumping and from construction and development practices
Sinkholes can also form when natural water-drainage patterns are changed and new water-diversion systems are developed
Some can form when the land surface is changed, such as when industrial and runoff-storage ponds are created
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Sinkholes can be human induced - Sinkholes can be human induced - Experiment Experiment
The overburden sediments that cover buried cavities in the aquifer systems are delicately balanced by ground water fluid pressure. The water below ground is actually helping to keep the surface soil in place. Groundwater pumping for urban water supply and for irrigation can produce new sinkholes in sinkhole-prone areas, such as Florida. If pumping results in a lowering of groundwater levels, then underground structural failure, and thus, sinkholes, can occur.
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Landslides
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Landslides are downward sliding of a relatively dry mass of earth and rock
These can happen because of heavy rain, earthquakes and human activity.
Landslides are usually associated with mountainous areas, but can also occur where relief is generally low
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Landslides are a major geologic hazard
In New Jersey they are a hazard in areas with steep to moderate slopes and where geologic formations are prone to failure
Examples of Landslides in New Jersey: July 23, 1887 caused by heavy rain November 1948 – Lambertville quarry killed two men August 2000 – caused by a foot of rain damaged homes
and businesses
One of the most active landslide areas is the Palisades located in northeastern New Jersey along the Hudson River
Most common in the winter and spring
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CAUSES: Over steepening of slopes by human activity causes many
landslides in New Jersey
Road construction, cutting of trees and other vegetation on landslide –prone slopes
Land development
Mining and quarrying have made steep slopes susceptible to landslides
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EFFECTS:LOSS OF HABITAT
LOSS OF TREES, FIELDS AT THE BASE OF SLOPE
LOSS OF TOPSOIL
DESTRUCTION OF HOMES
DESTRUCTION OF ROADS
LOSS OF LIFE
ECONOMIC IMPACT – COST FOR CLEANUP
PREVENTIONS: Education and knowledge, and planning are
the most valuable tools in preventing damage
Plant ground cover on slopes
Build retaining walls
In mudflow areas build channels or deflection walls to direct the flow around buildings
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Landslide Warning Signs
Doors or windows begin to stick or jam New cracks begin to appear in plaster, tile, brick or foundations Outside walls, walk ways or stairs begin to pull away from the building Cracks begin to widen on the ground or on paved areas such as streets or driveways Underground utility lines begin to break The ground begins to bulge at the base of a slope Water breaks through the ground surface in new locations Fences, retaining walls, utility poles or trees begin to tilt or move
PREPARE AHEAD OF TIME Make and evacuation plan Plan at least two evacuation routes – roads may be blocked due to debris Develop an emergency communication plan Have a set place to meet back together if separated Ask an out of state relative or friend to serve as the “family contact”
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Resource Page: Go to next slide for videos
Landslides - http://www.fema.gov/areyouready/landslide.shtm
http://landslides.usgs.gov/regional/inventory/newjersey/ http://www.state.nj.us/dep/njgs/enviroed/infocirc/landslides.pdf
http://www.stfrancis.edu/content/ns/bromer/earthsci/student10/index.htm
Worksheet: Landslides on the road to destruction
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WINTER STORMSWINTER STORMShttp://abcnews.go.com/Video/playerIndex?id=12495587
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Winter storms is an event in which dominant varieties of precipitation are formed that only occur at cold temperatures
Effects:ice can cause vegetation damage, over salting of roadways equals runoff into rivers and other water supplies leading to fish and plants dying, economic impacts, coastal flooding can increase road runoff
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Heat wave
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Heat Wave is an extensive slow moving air mass at a relatively high temperature.
Can cause: drought , dust storms, loss of vegetation, dried up wells, water restrictions, increase in food costs
Preventions: drink plenty of water, limit stressful activity outdoors
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http://www.youtube.com/watch?v=EQg4kHYrZ9c
http://abcnews.go.com/US/video/california-landslide-wipes-out-road-14998170
Packet worksheet: Weather Forecasting