Global warming climate change
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Global Warming – Climate Change.

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Global Warming – Climate Change. What do I need to know? What do I need to do?. Key Questions- ?????. Is the earth’s atmosphere warming? Is this warming causing climate change? Are humans impacting on this warming?
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An unnatural weather change – Climate Change What do I require to know? What do I require to do?

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Key Questions-????? Is the earth’s climate warming? Is this warming bringing on environmental change? Are people affecting on this warming? Assuming this is the case, what would I be able to do about it?

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Is the Earth’s Atmosphere Warming? Survey worldwide temps for most recent 150 years Variations in last 150 19 th century – consistent; Rise in mid 20 th ; Level off in mid 20 th ; Rapid ascent 1990-2009 - Why? What causes this example? Early – volcanoes, sun; Later – Burning fossil powers Variations on worldwide normal temps Land hotter than sea; More build towards shafts Average temps have ascended around 1.5 degrees since begin of 20 th century. Is this huge?

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Indicators - Butterflies, Glaciers, and Hurricanes Surface temps are not just markers of warming Earths’ internal temps; Upper levels of seas; Lower levels of air warming - upper levels cooling Earth’s cryosphere (snow & ice spread) is diminishing Glaciers, Arctic ice, Ice tops, Ice sheets - Reflections Weather examples over decades show changes More compelling hot and icy; Precipitation changes, Night temps; Increase in sea tempests Plants and creature species are moving NH moving northward and upward – 6 miles – 6 feet; Springtime occasions prior : 2-3 days (every decade)

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What Determines a Planet’s Temperature? Vitality parity – between approaching daylight and emanated warmth misfortune Sun sends in bright beams; Planet conveys infrared beams – Earth equalizations out at zero (0) degrees Earth’s air causes “greenhouse effect” Atmosphere is 80% nitrogen, 20% oxygen – straightforward to sun’s approaching beams and Earth’s active beams Water vapor and CO2 is straightforward to sun’s approaching bright beams BUT obscure to Earth’s active infrared beams – Result – increment in Earth’s temp to 60 degrees

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A Tale of Three Planets Neighboring planets (Mars, Venus) can give us a “greenhouse experiment” Comparison of Temps – No Atmosphere Mars: - 90 F; Earth: o F; Venus: 110 F Comparison of Temps – With Atmosphere Mars: - 120 F; Earth: 60 F; Venus: 500 F (melt lead) Comparison of Atmospheres Mars: 1% (.01) of Earth’s thickness; Cooler – reflects warmth Earth: 1.0 thickness – gives typical nursery impact Venus: 100 times Earth’s thickness – 96% is CO2; All water is vanished – powers nursery impact; CO2 - lasting

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The Human Factor Three variables influence temps – two are characteristic, one is us 1. Volcanoes Throws dust into air; structures mists; diminishes temps 2. Sun Burn rate shifts; separation from Earth; tilt of Earth hub 3. Anthropogenic – brought about by people Burn fossil fills – expands CO2 in air Other components Methane (minor); Aerosals – particles in air Why point the finger at us? Solid relationship – CO2 , higher temps; Natural reasons - differing impacts; Dominant connection in late decades has been anthropogenic

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Projected Impact of Climate Change - 2100 There will be an unfaltering ascent in worldwide temps Most likely 3-8 degrees; Drop of 11 degrees would bring new Ice Age; Increase of 9 degrees – tropics in NH Extreme climate occasions will increment – more noteworthy vacillation in climate Heat waves; Intense precipitation; Droughts; Intense typhoons Sea levels will rise Average will be 6”-18” (perhaps 20); Caused by hotter water, not softening ice; Salt water will infringe on crisp Polar advances of species will quicken

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What to Do? – Replace Fossil Fuels Two inquiries: 1. Do we have it? 2. Could we get it? Three primary wellsprings of vitality: 1. Sun Solar, Wind – Expensive; Limited; Variable accessibility – overcast cover, no air moving 2. Fossil Fuels Natural gas – smolders cleaner; Oil – running out (decades left); Coal – dirtiest, however most rich (300 years left); Nuclear – cleanest, yet most perilous 3. Tsunamis Rivers, dams, sea waves – constrained, most being utilized as of now

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Why is Global Warming So Controversial? A few individuals demand this is only a doubtful hypothesis Scientists experience difficulty imparting this to the overall population Climate change can be befuddling and irritating to individuals Solutions will have genuine financial and way of life effects Political contrasts among government pioneers effects progress towards arrangements

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What to Teach Students? 1. There is a contrast in the middle of climate and atmosphere 2. A dangerous atmospheric devation is quickening and is brought about for the most part by people smoldering fossil fills 3. A dangerous atmospheric devation is bringing about environmental change and will have a noteworthy effect on individuals and nature 4. Earth’s temperatures will in all likelihood rise 3-8 degrees by the year 2100. 5. Ocean levels have effectively risen and are anticipated to rise a great deal more 6. Scientific agreement an Earth-wide temperature boost is bringing about environmental change and presents us with a few genuine difficulties

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What to Teach Students? (2) 7. Legislative pioneers from numerous nations are chipping away at worldwide understandings to manage environmental change 8. New advances must be created to balance out and lessen nursery gasses 9. Sparing vitality and creating option vitality sources will help 10. Each distinct individual can take activities day by day to help with this circumstance

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What can Students and their Families Do? Turn off electrical gadgets when not being used Take shorter gives Close blinds/wraps on hot, sunny days Turn off lights when you leave a room Switch to glaring lights Plant trees Combine and lessen trips in autos Recycle at whatever point conceivable Purchase reused items Spread the word – energize astute vitality utilization

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Global Warming Websites List of Websites w