2 Catastrophic EventAn event that results from Earth processes and that can cause damage and endanger human lifeWeather Geologictornado earthquakehurricane tsunamisfloods volcanoesdroughtwildfire
3 Catastrophic Event The result of Processes in the atmosphere Processes on the Earth’s surfaceProcesses in the oceansProcesses inside the Earth
4 Catastrophic Events Can effect Earth in several ways Surface – speed up erosion and depositionInside Earth – change the ground
5 Human ActivitiesWhere people decide to live can increase the damaging effects of natural hazardsHow people use land can also alter Earth’s systems in ways that contribute to catastrophic events
6 Impact of How People Use Land People can alter the land so that flooding and fire can be worseNew Orleans built in a low depressionQueensland built on fire prone plainsCalifornia builds on steep slopes and creates mudslides
9 a violently rotating column of air formed when warm and cold air meet Tornadoa violently rotating column of air formed when warm and cold air meet
10 TornadoCause – cold and warm air collidingwhen thunderstorms meetImpact to Earth – kills plants, damagestopsoilImpact to People – high winds destroybuildings, can have floodingSimilar to – hurricaneHow are they similar – high winds andrain
11 StatisticsTexas ranks 11th among the 50 states in density of tornadoes with an average of 5.7 tornadoes per 10,000 square miles, per year.
15 hurricanea large rotating spiral of air formed when high and low pressure systems meet over warm ocean water
16 HurricaneCause – air pressure differences overthe oceanImpact to Earth – kills plants, destroysbeachesImpact to People – high winds destroybuildings, can have floodingSimilar to – tornadoHow are they similar – high winds andrain
17 Top 10 Most Intense Hurricanes At Landfall (U.S.A) StatisticsTop 10 Most Intense Hurricanes At Landfall (U.S.A)Rank Hurricane NameYear CategoryPressure1Florida Keys (Labor Day)19355892 mb2Hurricane Camille1969909 mb3Hurricane Katrina2005920 mb4Hurricane Andrew1992922 mbTexas (Indianola)1886925 mb6Florida Keys1919927 mb7FL (Lake Okeechobee)1928929 mb8Hurricane Donna1960930 mb9Unnamed (New Orleans LA)1915931 mb10Hurricane Carla1961
20 tsunamia large, fast moving wave caused by an earthquake deep under the ocean floor
21 TsunamiCause – earthquake under the oceanfloorImpact to Earth – destroys beaches andcoral reefsImpact to People – large loss of life,destroys buildingsSimilar to – earthquake, flood, volcanoHow are they similar – causes tsunami,water, pressure release
25 a vent in the Earth’s surface which allows magma and ash to escape volcanoa vent in the Earth’s surface which allows magma and ash to escape
26 VolcanoCause – build up of pressure deepinside EarthImpact to Earth – burns plants, createsnew landImpact to People – burns or coversbuildingsSimilar to – earthquake, wildfireHow are they similar – pressurerelease, burns everything
31 earthquakea vibration of the Earth’s surface caused by a release of pressure deep within the Earth
32 EarthquakeCause – moving tectonic platesImpact to Earth – changes the look ofthe landImpact to People – damages buildings,kills peopleSimilar to – volcano, tsunamiHow are they similar – pressure release
36 droughtextremely dry conditions caused by a lack of rain over a long period of time
37 DroughtCause – lack of rain, heatImpact to Earth – kills plants andanimalsImpact to People – money loss fromcrop and livestock damageSimilar to – wildfireHow are they similar – loss of life andvegetation
43 large are of fire caused by a lightning strike or man wildfirelarge are of fire caused by a lightning strike or man
44 WildfireCause – lightning, can be man-madeImpact to Earth – burns everything,fertilizes the soilImpact to People – destroys everythingin it’s waySimilar to – drought, volcanoHow are they similar – loss of life, fire
51 Which of these natural disasters can happen in our area? JH-KEADLEWhich of these natural disasters can happen in our area?
52 JH-KEADLEAssignmentWe will be researching catastrophic events. You will get to pull a topic out of a coffee can. That will be the catastrophic event you will research. On the “Catastrophic Event” handout, find your event. You will be given an information sheet on your event. Start your research with the web sites listed on the sheet. Once you have used those sites, you can google your event to get other information.
53 JH-KEADLEPoster Instructions:Once everyone that has your event is finished researching, you will form a group to create a poster about your event. Make sure all of the facts from your research card are on the poster. You will only have part of a class period to construct your poster so work quickly and efficiently.
54 JH-KEADLEInformation SharingOnce groups begin finishing their poster, you will trade posters to complete your “Catastrophic Events” handout. Using other group’s posters, fill in the information on your paper for their event. If some of their information is missing, use the information sheets to complete your handout.