Presentation on theme: "Urbanization –Deforestation- Mining"— Presentation transcript:
1 Urbanization –Deforestation- Mining Eric AngatTeacher
2 What will happen to the trees when urbanization sets in? Think!
3 2. How are we affected by deforestation? Think! Climate change Extinction of species.DEFORESTATIONEndangered species.floodingHungererosion
4 3. What is the difference between rural and urban? Less tresssmogmore pollutionMore tressFresh AirLess pollutionMoreopportunitiesMore jobsLessopportunityLess jobsruralurban
5 4. Define atmosphere, biosphere, hydrosphere, and lithosphere. The biosphere is the sum of all ecosystems.Our air.Water on EarthRocks and soil
6 5. What are the positive and negative effects of urbanization?
7 Higher population density means overcrowding. 5. What are the positive and negative effects ofurbanization?Negative effectsHigher population density means overcrowding.Groundwater depletion.More trashPolluted air.Positive effectsBooming business means more jobs.More entertainment places like parks, concert halls, movie theaters.
8 Preventing Earth from freezing. But too much greenhouse gas causes Greenhouse gases warm Our Planet.Too much causes Global Warming!Greenhouse gasestrap heat on EarthPreventing Earth from freezing.But too much greenhouse gas causesGlobal Warming.
9 6. How does deforestation lead to global warming? Think!
10 Greenhouse gas traps heat on Earth Plants use CO2 in photosynthesis. This alleviates or lessens greenhouse gas in the atmosphere.CO2(Carbon dioxide)Greenhouse gas traps heat on EarthBURNING FOSSIL FUEL
11 Cutting of trees deprives our planet the natural way (photosynthesis) of removing excess greenhouse gases that causes Global Warming.CO2(carbon dioxide)Greenhouse gas thattraps heat on EarthBURNING FOSSIL FUEL
13 Roots hold the soil in place preventing erosion. Preventing EROSION from happening.
14 8. What is fracking? How does it affect our groundwater? Think!
15 Municipal water deposit Potable water sourceGas towerMunicipal water depositaquiferAquifer contaminationFracking breaksFracking zone – introduction of water, chemicals and sand.
16 9. What is a microclimate? Urbanization The city develops a micro-climate because of the pollution. CO2, a greenhouse gas, causes temperature rise.A microclimate is where the climate differs from the surrounding area.
17 Micro-climateIs climate different from the surrounding climate due to urbanization.PollutionMore CO2Greenhouse gas ( warmer)
18 10. A local government voted against the large-scale development of buildings and roads in the area. What could have been the motive behind their decision?It could lead to a decrease in the averageannual temperature in the area.It could lead to the formation of heat islands,creating a microclimate in the area.It could lead to the introduction of invasivespecies.It could lead to a decrease in acid rainproduction in the area.
19 Alternative Energy creates less Pollution compared to fossil fuel.
20 11. A company has several factories around the world and has decided to transition from burning fossil fuels to using alternative energy resources. How could a decrease in burning fossil fuels impact the atmosphere?It could decrease the oxygen levels of theatmosphere.It could increase the nitrogen levels of theIt could decrease the carbon dioxide levels ofthe atmosphere.It could increase the sulfur dioxide levels of the
21 Urbanization leads to covering lands with concrete and asphalt that prevents water from soaking into the ground. This leads to increase runoff, erosion, and flooding in low lying areas.Asphalt
22 12. How does urbanization change the natural flow of water? A. transpiration from vegetation isincreased and erosion is reduced.B. precipitation is reduced andinfiltration is increased.C. erosion caused by runoff is reducedand precipitation is increased.D. surface runoff is increased andinfiltration is reduced.
23 Higher population means less water and more pollution and diseases.
24 13. Which consequence could an exponentially growing human population have on drinkable water? It could cause a decrease in the amount ofwaste and pollutants in the water supply.B. It could cause an increase in the amount ofwater available for the population.C. It could cause an increase in cases ofwaterborne diseases.D. It could cause a decrease in needing water forsurvival.
25 Pipes to draw water from the aquifer. water. Aquifer or groundwater becomes salty and unusable.Saltwater intrusion to aquifer.
26 14. The drilling for freshwater increases along a coastal area 14. The drilling for freshwater increases along a coastal area. What is a likely consequence of this action?an intrusion of salt water intoaquifersthe loss of water resources inestuariesC. the destruction of estuaries becauseof an increase in sea levelsD. a decrease in salt concentration ininlet waterways
27 Less Oxygen Heated water results to death or migration of fish. More CO2
28 15. Some factories can increase the amount of thermal pollution by dumping heated water into lakes and rivers. How can this type of pollution affect aquatic environments?It can reduce the number of aquatic species inthe environment.It can increase the amount of dissolved oxygenin the environment.It can reduce the decomposition rate oforganisms in the environment.It can increase the life expectancy of animalsin the aquatic environment.
29 Reasons to build DamsReserve water for human consumption during summer and drought.Produce electricity through the use of turbines.
30 16. A local government is considering whether to build a dam 16. A local government is considering whether to build a dam. Which is an advantage of building this structure?It can decrease the accumulation ofsediment in the water.B. It can improve the natural habitat ofplants and animals.C. It is an inexpensive process.D. It can create a storage place for water.
31 Open pit mining Landslide is large scale erosion. an excavation or cut made at the surface of the ground for the purpose of extracting ore.SALT LAKE CITY (AP) — The avalanche near Salt Lake City last year that carried enough rock, dirt and debris to bury New York's Central Park under 66 feet of rubble was North America's largest such disaster in modern history, according to University of Utah scientists.Related StoriesThe April 2013 rockslide sent 165 million tons of debris into a nearly mile-deep pit where it cracked bedrock and triggered unprecedented earthquakes, the researchers said in a newly published study."We don't know of any case until now where landslides have been shown to trigger earthquakes," said Jeff Moore, assistant professor of geology and geophysics.There were no injuries or deaths as the slide temporarily shut down a copper mine, burying 14 giant haul trucks and leading to a series of layoffs and buyouts at Kennecott Utah Copper Corp."It was a creeping movement that had been developing over many months along an old fault line," Moore said Tuesday. Kennecott had been monitoring the area and evacuated workers ahead of the danger, he said.The disaster didn't involve a volcanic explosion and was actually a pair of related slides about 90 minutes apart, said Moore, who co-authored the study together with Kris Pankow, associate director of the university's seismograph stations.The peer-reviewed research was published Monday in the Geological Society of America's magazine, GSA Today.The debris slides falling as fast as 100 mph crashed to earth with such force that they registered as magnitude-5 earthquakes and then triggered 16 smaller quakes where the bedrock cracked, Moore said.Mother Nature has put on bigger shows, the scientists noted.The 1980 eruption of Mount St. Helens in Washington unleashed a landslide 57 times larger than Kennecott's.Another slide about 8,000 years ago at the mouth of Zion Canyon in southern Utah was five times as large.Landslide. Other dangers include water pollution, habitat destruction.
32 17. What are the Effects of Mining? Dredging or desilting.Siltation of lakes. Bodies of water become shallow.
33 Deforestation, destruction of habitat. 17. What are the Effects of Mining?Deforestation, destruction of habitat.
34 17. What are the Effects of Mining? Pollution of lakes and rivers that leads to fish kills.
35 18. Why does mining of coal and other natural resources often result in environment pollution? Mining pollutes the air near streams.Mining produces acid precipitation near streams.Mining creates waste material which can flow into streams.Mining strips the surface of the land near streams
36 with water vapor and fall as Acid Rain. CO2 and SO2 will combinewith water vapor and fall as Acid Rain.
37 19. Where would the highest amounts of acid rain most likely be found? over the oceanin the forestin urban areasin the mountains