Presentation on theme: "Urbanization –Deforestation- Mining Eric Angat Teacher."— Presentation transcript:
Urbanization –Deforestation- Mining Eric Angat Teacher
1.What will happen to the trees when urbanization sets in? Think!
2. How are we affected by deforestation? Think! flooding erosion Endangered species. Extinction of species. Climate change Hunger DEFORESTATION
3. What is the difference between rural and urban? rural urban More tress Fresh Air Less pollution Less tress smog more pollution Less opportunity Less jobs More opportunities More jobs
4. Define atmosphere, biosphere, hydrosphere, and lithosphere. The biosphere is the sum of all ecosystems. Our air. Rocks and soil Water on Earth
5. What are the positive and negative effects of urbanization?
5. What are the positive and negative effects of urbanization? Positive effects Booming business means more jobs. More entertainment places like parks, concert halls, movie theaters. Negative effects Higher population density means overcrowding. Groundwater depletion. More trash Polluted air.
http://www.srpmic-nsn.gov/government/epnr/ghg.asp Greenhouse gases trap heat on Earth Preventing Earth from freezing. But too much greenhouse gas causes Global Warming. Greenhouse gases warm Our Planet. Too much causes Global Warming!
6. How does deforestation lead to global warming? Think!
BURNING FOSSIL FUEL Greenhouse gas traps heat on Earth CO 2 (Carbon dioxide) Plants use CO 2 in photosynthesis. This alleviates or lessens greenhouse gas in the atmosphere. http://a-zofglobalwarming.blogspot.com/2008/12/un-action-to-halt-deforestation.html
BURNING FOSSIL FUEL Greenhouse gas that traps heat on Earth CO2 (carbon dioxide) Cutting of trees deprives our planet the natural way ( photosynthesis ) of removing excess greenhouse gases that causes Global Warming. http://conservationbytes.com/2010/09/19/cartoon-guide-to-biodiversity-loss-ix/
http://science.howstuffworks.com/environmental/earth/geology/landslide5.htm Roots hold the soil in place preventing erosion. Preventing EROSION from happening. http://blogs.agu.org/landslideblog/files/2012/11/12_11-UK-slide-51.jpg
8. What is fracking? How does it affect our groundwater? Think!
http://genteconconciencia.es/blog/?p=7831 aquifer Potable water source Gas tower Municipal water deposit Fracking zone – introduction of water, chemicals and sand. Fracking breaks Aquifer contamination
Urbanization The city develops a micro- climate because of the pollution. CO 2, a greenhouse gas, causes temperature rise. A microclimate is where the climate differs from the surrounding area. 9. What is a microclimate?
Micro-climate Is climate different from the surrounding climate due to urbanization. Pollution More CO 2 Greenhouse gas ( warmer)
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? A.It could lead to a decrease in the average annual temperature in the area. B.It could lead to the formation of heat islands, creating a microclimate in the area. C.It could lead to the introduction of invasive species. D.It could lead to a decrease in acid rain production in the area.
Alternative Energy creates less Pollution compared to fossil fuel. Fossil Fuel
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? A.It could decrease the oxygen levels of the atmosphere. B.It could increase the nitrogen levels of the atmosphere. C.It could decrease the carbon dioxide levels of the atmosphere. D.It could increase the sulfur dioxide levels of the atmosphere.
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
12. How does urbanization change the natural flow of water? A. transpiration from vegetation is increased and erosion is reduced. B. precipitation is reduced and infiltration is increased. C. erosion caused by runoff is reduced and precipitation is increased. D. surface runoff is increased and infiltration is reduced.
Higher population means less water and more pollution and diseases.
13. Which consequence could an exponentially growing human population have on drinkable water? A.It could cause a decrease in the amount of waste and pollutants in the water supply. B. It could cause an increase in the amount of water available for the population. C. It could cause an increase in cases of waterborne diseases. D. It could cause a decrease in needing water for survival.
Aquifer or groundwater becomes salty and unusable. Saltwater intrusion to aquifer. Pipes to draw water from the aquifer. water.
14. The drilling for freshwater increases along a coastal area. What is a likely consequence of this action? A.an intrusion of salt water into aquifers B.the loss of water resources in estuaries C. the destruction of estuaries because of an increase in sea levels D. a decrease in salt concentration in inlet waterways
Heated water results to death or migration of fish. More CO 2 Less Oxygen
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? A.It can reduce the number of aquatic species in the environment. B.It can increase the amount of dissolved oxygen in the environment. C.It can reduce the decomposition rate of organisms in the environment. D.It can increase the life expectancy of animals in the aquatic environment.
Reasons to build Dams 1.Reserve water for human consumption during summer and drought. 2.Produce electricity through the use of turbines.
16. A local government is considering whether to build a dam. Which is an advantage of building this structure? A.It can decrease the accumulation of sediment in the water. B. It can improve the natural habitat of plants and animals. C. It is an inexpensive process. D. It can create a storage place for water.
Open pit mining Landslide. Other dangers include water pollution, habitat destruction. http://news.yahoo.com/utah-avalanche-largest-modern-history-221000689.html Landslide is large scale erosion. an excavation or cut made at the surface of the ground for the purpose of extracting ore.
17. What are the Effects of Mining? Siltation of lakes. Bodies of water become shallow. Dredging or desilting.
Deforestation, destruction of habitat. 17. What are the Effects of Mining?
Pollution of lakes and rivers that leads to fish kills. 17. What are the Effects of Mining?
18. Why does mining of coal and other natural resources often result in environment pollution? A.Mining pollutes the air near streams. B.Mining produces acid precipitation near streams. C.Mining creates waste material which can flow into streams. D.Mining strips the surface of the land near streams
CO 2 and SO 2 will combine with water vapor and fall as Acid Rain.
19. Where would the highest amounts of acid rain most likely be found? A.over the ocean B.in the forest C.in urban areas D.in the mountains