logging in or signing up Global Warming dantescience Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 890 Category: Education License: All Rights Reserved Like it (1) Dislike it (0) Added: October 31, 2009 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: amnaaamir (14 month(s) ago) plz let me download it Saving..... Post Reply Close Saving..... Edit Comment Close By: amnaaamir (14 month(s) ago) plzzzzzzzzzz Saving..... Post Reply Close Saving..... Edit Comment Close By: amnaaamir (14 month(s) ago) plzzzzzzzzzz Saving..... Post Reply Close Saving..... Edit Comment Close By: amnaaamir (14 month(s) ago) plzplz let me download it plz plzz plzzz Saving..... Post Reply Close Saving..... Edit Comment Close By: alice28miracle (14 month(s) ago) please send me this ppt to my email wonderland28@mail.ru i will be very grateful Saving..... Post Reply Close Saving..... Edit Comment Close loading.... See all Premium member Presentation Transcript GLOBAL WARMING : GLOBAL WARMING 1 M.Bregar (Dante C.S.S.) Keeping our Planet Warm : Keeping our Planet Warm Sun provides light energy which is transformed to heat (infared energy) once hitting our planet. 2 M.Bregar (Dante C.S.S.) Greenhouse Effect : Greenhouse Effect Normally, the Sun’s rays bounce off a planet back into space. The Earth’s greenhouse gases, retain some of this energy and this is called the Greenhouse Effect The Greenhouse Effect allows the Earth to maintain an average temperature of 14◦C. 3 M.Bregar (Dante C.S.S.) Slide 4: 4 M.Bregar (Dante C.S.S.) Greenhouse Effect : Greenhouse Effect THE GREENHOUSE EFFECT 5 M.Bregar (Dante C.S.S.) What are Greenhouse Gases? : What are Greenhouse Gases? 6 M.Bregar (Dante C.S.S.) Greenhouse Gases : Greenhouse Gases These are gases which have the ability to trap heat They are naturally occurring in our atmosphere 7 M.Bregar (Dante C.S.S.) (1) Water Vapour : (1) Water Vapour Added naturally to atmosphere through evaporation of water Burning fossil fuels also releases water vapour Not a concern 8 M.Bregar (Dante C.S.S.) Greenhouse Gases : Greenhouse Gases 9 M.Bregar (Dante C.S.S.) (2) Carbon Dioxide : (2) Carbon Dioxide Most abundant greenhouse gas Naturally released in respiration and decomposition Levels remain “balanced” within the carbon cycle 10 M.Bregar (Dante C.S.S.) Slide 11: 11 M.Bregar (Dante C.S.S.) (2) Carbon Dioxide : (2) Carbon Dioxide Levels of CO2 drastically increased after the industrial revolution 12 M.Bregar (Dante C.S.S.) (2) Carbon Dioxide : (2) Carbon Dioxide Why did CO2 levels rise after the industrial revolution? 13 M.Bregar (Dante C.S.S.) Industrial Revolution : Industrial Revolution 14 M.Bregar (Dante C.S.S.) (2) Carbon Dioxide : (2) Carbon Dioxide 15 M.Bregar (Dante C.S.S.) (2) Carbon Dioxide : (2) Carbon Dioxide Humans have increased CO2 levels by through (1) combustion of fuels and (2) deforestation 16 M.Bregar (Dante C.S.S.) Deforestation : Deforestation 17 M.Bregar (Dante C.S.S.) Slide 18: 18 M.Bregar (Dante C.S.S.) (3) Methane : (3) Methane 20x more effective in trapping heat than carbon dioxide Released naturally by cud-chewing animals Released in decaying of matter (fecal matter, sewage, swamps, landfills, etc.) 19 M.Bregar (Dante C.S.S.) Slide 20: Methane levels have increased over 150% in the last 100 years 20 M.Bregar (Dante C.S.S.) (4) Methane : (4) Methane Cattle produce methane when digesting food 21 M.Bregar (Dante C.S.S.) (4) Methane : (4) Methane 22 M.Bregar (Dante C.S.S.) (4) Ozone : (4) Ozone Naturally occurring but can be “made” Good: in ozone layer, filters UV radiation Bad: damages humans/plants and traps heat 23 M.Bregar (Dante C.S.S.) (4) Ozone : (4) Ozone Levels have increase approximately 18% 24 M.Bregar (Dante C.S.S.) (4) Ozone : (4) Ozone Good Ozone In the OZONE LAYER about 10 to 30 miles above the Earth Shields us from the Sun’s harmful ultraviolet rays. Bad Ozone Produced when air smog pollutants react with sunlight Harmful to human and plant life 25 M.Bregar (Dante C.S.S.) (4) Ozone : (4) Ozone 26 M.Bregar (Dante C.S.S.) Slide 27: 27 M.Bregar (Dante C.S.S.) (5) Nitrogen Oxides : (5) Nitrogen Oxides Various forms Produced naturally in the nitrogen cycle, but also by humans in agriculture and the burning of fossil fuels Involve in global warming, destruction of ozone, and acid rain 28 M.Bregar (Dante C.S.S.) (6) CFC’s (Halocarbons) : (6) CFC’s (Halocarbons) Most powerful greenhouse gas which does not occur naturally Destroys ozone layer. Was banned in Montreal Protocol Found in refrigerators (freon), foam plastics, and in aerosol cans 29 M.Bregar (Dante C.S.S.) Global Warming : Global Warming 30 M.Bregar (Dante C.S.S.) Slide 31: M.Bregar (Dante C.S.S.) 31 Global Carbon Cycle : Global Carbon Cycle Cycling of carbon through biotic and abiotic components 32 M.Bregar (Dante C.S.S.) Global Warming : Global Warming Global Warming The Earth’s recent temperature increase Seven warmest years in history have been recorded recently 33 M.Bregar (Dante C.S.S.) Slide 34: 34 M.Bregar (Dante C.S.S.) Slide 35: 35 M.Bregar (Dante C.S.S.) Slide 36: 36 M.Bregar (Dante C.S.S.) Global Warming : Global Warming Why is our Planet Warming? Increase in concentration of “greenhouse gases” in our atmosphere Deforestation (less trees) 37 M.Bregar (Dante C.S.S.) Slide 38: 38 M.Bregar (Dante C.S.S.) Slide 39: 39 M.Bregar (Dante C.S.S.) Slide 40: 40 M.Bregar (Dante C.S.S.) Interfering With The Global Carbon Cycles : Interfering With The Global Carbon Cycles 41 M.Bregar (Dante C.S.S.) What are the Dangers of Global Warming? : What are the Dangers of Global Warming? 42 M.Bregar (Dante C.S.S.) (1) Polar Ice Caps Melting : (1) Polar Ice Caps Melting Melting of polar ice caps Problems: raise sea levels, desalinate oceans, change global weather patterns 43 M.Bregar (Dante C.S.S.) (1) Polar Ice Caps Melting : (1) Polar Ice Caps Melting 44 M.Bregar (Dante C.S.S.) (2) Weather Change : (2) Weather Change Warmer temperatures means more evaporation of water, therefore more rain This can lead to erosion, flooding, and mudslides 45 M.Bregar (Dante C.S.S.) (2) Weather Change : (2) Weather Change 46 M.Bregar (Dante C.S.S.) (2) Weather Change : (2) Weather Change 47 M.Bregar (Dante C.S.S.) (2) Weather Change : (2) Weather Change 48 M.Bregar (Dante C.S.S.) Slide 49: Warmer ocean temperatures would result in more & stronger storms 49 M.Bregar (Dante C.S.S.) (3) Local Climate Change : (3) Local Climate Change Local temperatures will change Will influence plant/animal life Can drastically alter how we produce food crops 50 M.Bregar (Dante C.S.S.) You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
Global Warming dantescience Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 890 Category: Education License: All Rights Reserved Like it (1) Dislike it (0) Added: October 31, 2009 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: amnaaamir (14 month(s) ago) plz let me download it Saving..... Post Reply Close Saving..... Edit Comment Close By: amnaaamir (14 month(s) ago) plzzzzzzzzzz Saving..... Post Reply Close Saving..... Edit Comment Close By: amnaaamir (14 month(s) ago) plzzzzzzzzzz Saving..... Post Reply Close Saving..... Edit Comment Close By: amnaaamir (14 month(s) ago) plzplz let me download it plz plzz plzzz Saving..... Post Reply Close Saving..... Edit Comment Close By: alice28miracle (14 month(s) ago) please send me this ppt to my email wonderland28@mail.ru i will be very grateful Saving..... Post Reply Close Saving..... Edit Comment Close loading.... See all Premium member Presentation Transcript GLOBAL WARMING : GLOBAL WARMING 1 M.Bregar (Dante C.S.S.) Keeping our Planet Warm : Keeping our Planet Warm Sun provides light energy which is transformed to heat (infared energy) once hitting our planet. 2 M.Bregar (Dante C.S.S.) Greenhouse Effect : Greenhouse Effect Normally, the Sun’s rays bounce off a planet back into space. The Earth’s greenhouse gases, retain some of this energy and this is called the Greenhouse Effect The Greenhouse Effect allows the Earth to maintain an average temperature of 14◦C. 3 M.Bregar (Dante C.S.S.) Slide 4: 4 M.Bregar (Dante C.S.S.) Greenhouse Effect : Greenhouse Effect THE GREENHOUSE EFFECT 5 M.Bregar (Dante C.S.S.) What are Greenhouse Gases? : What are Greenhouse Gases? 6 M.Bregar (Dante C.S.S.) Greenhouse Gases : Greenhouse Gases These are gases which have the ability to trap heat They are naturally occurring in our atmosphere 7 M.Bregar (Dante C.S.S.) (1) Water Vapour : (1) Water Vapour Added naturally to atmosphere through evaporation of water Burning fossil fuels also releases water vapour Not a concern 8 M.Bregar (Dante C.S.S.) Greenhouse Gases : Greenhouse Gases 9 M.Bregar (Dante C.S.S.) (2) Carbon Dioxide : (2) Carbon Dioxide Most abundant greenhouse gas Naturally released in respiration and decomposition Levels remain “balanced” within the carbon cycle 10 M.Bregar (Dante C.S.S.) Slide 11: 11 M.Bregar (Dante C.S.S.) (2) Carbon Dioxide : (2) Carbon Dioxide Levels of CO2 drastically increased after the industrial revolution 12 M.Bregar (Dante C.S.S.) (2) Carbon Dioxide : (2) Carbon Dioxide Why did CO2 levels rise after the industrial revolution? 13 M.Bregar (Dante C.S.S.) Industrial Revolution : Industrial Revolution 14 M.Bregar (Dante C.S.S.) (2) Carbon Dioxide : (2) Carbon Dioxide 15 M.Bregar (Dante C.S.S.) (2) Carbon Dioxide : (2) Carbon Dioxide Humans have increased CO2 levels by through (1) combustion of fuels and (2) deforestation 16 M.Bregar (Dante C.S.S.) Deforestation : Deforestation 17 M.Bregar (Dante C.S.S.) Slide 18: 18 M.Bregar (Dante C.S.S.) (3) Methane : (3) Methane 20x more effective in trapping heat than carbon dioxide Released naturally by cud-chewing animals Released in decaying of matter (fecal matter, sewage, swamps, landfills, etc.) 19 M.Bregar (Dante C.S.S.) Slide 20: Methane levels have increased over 150% in the last 100 years 20 M.Bregar (Dante C.S.S.) (4) Methane : (4) Methane Cattle produce methane when digesting food 21 M.Bregar (Dante C.S.S.) (4) Methane : (4) Methane 22 M.Bregar (Dante C.S.S.) (4) Ozone : (4) Ozone Naturally occurring but can be “made” Good: in ozone layer, filters UV radiation Bad: damages humans/plants and traps heat 23 M.Bregar (Dante C.S.S.) (4) Ozone : (4) Ozone Levels have increase approximately 18% 24 M.Bregar (Dante C.S.S.) (4) Ozone : (4) Ozone Good Ozone In the OZONE LAYER about 10 to 30 miles above the Earth Shields us from the Sun’s harmful ultraviolet rays. Bad Ozone Produced when air smog pollutants react with sunlight Harmful to human and plant life 25 M.Bregar (Dante C.S.S.) (4) Ozone : (4) Ozone 26 M.Bregar (Dante C.S.S.) Slide 27: 27 M.Bregar (Dante C.S.S.) (5) Nitrogen Oxides : (5) Nitrogen Oxides Various forms Produced naturally in the nitrogen cycle, but also by humans in agriculture and the burning of fossil fuels Involve in global warming, destruction of ozone, and acid rain 28 M.Bregar (Dante C.S.S.) (6) CFC’s (Halocarbons) : (6) CFC’s (Halocarbons) Most powerful greenhouse gas which does not occur naturally Destroys ozone layer. Was banned in Montreal Protocol Found in refrigerators (freon), foam plastics, and in aerosol cans 29 M.Bregar (Dante C.S.S.) Global Warming : Global Warming 30 M.Bregar (Dante C.S.S.) Slide 31: M.Bregar (Dante C.S.S.) 31 Global Carbon Cycle : Global Carbon Cycle Cycling of carbon through biotic and abiotic components 32 M.Bregar (Dante C.S.S.) Global Warming : Global Warming Global Warming The Earth’s recent temperature increase Seven warmest years in history have been recorded recently 33 M.Bregar (Dante C.S.S.) Slide 34: 34 M.Bregar (Dante C.S.S.) Slide 35: 35 M.Bregar (Dante C.S.S.) Slide 36: 36 M.Bregar (Dante C.S.S.) Global Warming : Global Warming Why is our Planet Warming? Increase in concentration of “greenhouse gases” in our atmosphere Deforestation (less trees) 37 M.Bregar (Dante C.S.S.) Slide 38: 38 M.Bregar (Dante C.S.S.) Slide 39: 39 M.Bregar (Dante C.S.S.) Slide 40: 40 M.Bregar (Dante C.S.S.) Interfering With The Global Carbon Cycles : Interfering With The Global Carbon Cycles 41 M.Bregar (Dante C.S.S.) What are the Dangers of Global Warming? : What are the Dangers of Global Warming? 42 M.Bregar (Dante C.S.S.) (1) Polar Ice Caps Melting : (1) Polar Ice Caps Melting Melting of polar ice caps Problems: raise sea levels, desalinate oceans, change global weather patterns 43 M.Bregar (Dante C.S.S.) (1) Polar Ice Caps Melting : (1) Polar Ice Caps Melting 44 M.Bregar (Dante C.S.S.) (2) Weather Change : (2) Weather Change Warmer temperatures means more evaporation of water, therefore more rain This can lead to erosion, flooding, and mudslides 45 M.Bregar (Dante C.S.S.) (2) Weather Change : (2) Weather Change 46 M.Bregar (Dante C.S.S.) (2) Weather Change : (2) Weather Change 47 M.Bregar (Dante C.S.S.) (2) Weather Change : (2) Weather Change 48 M.Bregar (Dante C.S.S.) Slide 49: Warmer ocean temperatures would result in more & stronger storms 49 M.Bregar (Dante C.S.S.) (3) Local Climate Change : (3) Local Climate Change Local temperatures will change Will influence plant/animal life Can drastically alter how we produce food crops 50 M.Bregar (Dante C.S.S.)