by john b.. plate tectonics the movement of the plates caused by convection in the mantle. moves the...
TRANSCRIPT
![Page 1: By John B.. Plate tectonics The movement of the plates caused by convection in the mantle. Moves the continents and widens/compresses the oceans. –affects](https://reader038.vdocument.in/reader038/viewer/2022110323/56649d835503460f94a6a013/html5/thumbnails/1.jpg)
By John B.
Plate tectonics and Climate
![Page 2: By John B.. Plate tectonics The movement of the plates caused by convection in the mantle. Moves the continents and widens/compresses the oceans. –affects](https://reader038.vdocument.in/reader038/viewer/2022110323/56649d835503460f94a6a013/html5/thumbnails/2.jpg)
Plate tectonics •The movement of the plates caused by convection in the mantle.
•Moves the continents and widens/compresses the oceans. –affects ocean currents •Where oceans meet continents they subside.•The sublimation of oceans and collision of continents creates mountains
![Page 3: By John B.. Plate tectonics The movement of the plates caused by convection in the mantle. Moves the continents and widens/compresses the oceans. –affects](https://reader038.vdocument.in/reader038/viewer/2022110323/56649d835503460f94a6a013/html5/thumbnails/3.jpg)
Plate Tectonics ContMountain ranges affect
low level winds and temperature drops as altitude increases.
Volcanoes form along plate boundaries volcanoes release greenhouse gasses which heats the earth.
The location oceans reduce climate variance.
![Page 4: By John B.. Plate tectonics The movement of the plates caused by convection in the mantle. Moves the continents and widens/compresses the oceans. –affects](https://reader038.vdocument.in/reader038/viewer/2022110323/56649d835503460f94a6a013/html5/thumbnails/4.jpg)
How Ocean Currents are affected by the position of the continents.Ocean currents
(mainly the thermalhaline belts) distribute heat from the tropics to higher latitudes.
Ocean currents are deflected by continents.
![Page 5: By John B.. Plate tectonics The movement of the plates caused by convection in the mantle. Moves the continents and widens/compresses the oceans. –affects](https://reader038.vdocument.in/reader038/viewer/2022110323/56649d835503460f94a6a013/html5/thumbnails/5.jpg)
Some important examples. The northern polar
ice caps were created when the isthmus of panama was formed blocking direct circulation of the waters of the pacific and Atlantic oceans.
![Page 6: By John B.. Plate tectonics The movement of the plates caused by convection in the mantle. Moves the continents and widens/compresses the oceans. –affects](https://reader038.vdocument.in/reader038/viewer/2022110323/56649d835503460f94a6a013/html5/thumbnails/6.jpg)
Some important examples cont.Antarctica even
thought it has stayed relatively close to its current position wasn’t always locked in ice. The ice sheets only formed when Antarctica and South America separated allowing the cold ocean currents to continually circulate around the continent.
![Page 7: By John B.. Plate tectonics The movement of the plates caused by convection in the mantle. Moves the continents and widens/compresses the oceans. –affects](https://reader038.vdocument.in/reader038/viewer/2022110323/56649d835503460f94a6a013/html5/thumbnails/7.jpg)
Some important examplesDublin Ireland is on
approximately the same latitude as Saskatoon Saskatchewan but palm trees grow in Ireland and Saskatchewan has some of the highest snow fall in the western hemisphere. The reason for Irelands relative warmth is the gulf steam.
![Page 8: By John B.. Plate tectonics The movement of the plates caused by convection in the mantle. Moves the continents and widens/compresses the oceans. –affects](https://reader038.vdocument.in/reader038/viewer/2022110323/56649d835503460f94a6a013/html5/thumbnails/8.jpg)
Mountains affect on climate. Mountains disrupt
low level winds.Mountains can
channel water to one side or the other creating deserts
As altitude increases temperature decrease 3-5˚F for every thousand feet.
![Page 9: By John B.. Plate tectonics The movement of the plates caused by convection in the mantle. Moves the continents and widens/compresses the oceans. –affects](https://reader038.vdocument.in/reader038/viewer/2022110323/56649d835503460f94a6a013/html5/thumbnails/9.jpg)
Volcanoes affect on climate Volcanoes of course
heat every thing around them of course, but they also spew greenhouse gasses into the atmosphere. Major eruptions can also launch large amounts of ash into the atmosphere which can cause wide spread cooling.
![Page 10: By John B.. Plate tectonics The movement of the plates caused by convection in the mantle. Moves the continents and widens/compresses the oceans. –affects](https://reader038.vdocument.in/reader038/viewer/2022110323/56649d835503460f94a6a013/html5/thumbnails/10.jpg)
Some important examples Mount Tampora erupted
causing the year without a summer in 1816 . This caused widespread cooling. As a direct result of this crops died and many people starved to death.
![Page 11: By John B.. Plate tectonics The movement of the plates caused by convection in the mantle. Moves the continents and widens/compresses the oceans. –affects](https://reader038.vdocument.in/reader038/viewer/2022110323/56649d835503460f94a6a013/html5/thumbnails/11.jpg)
Some important examples Cont.A similar affect
accrued with the eruption of Krakatau in 1883 which caused the temperature to drop up to 1.2˚C. Also both these eruptions caused acid rain which decimated ecosystems.
![Page 12: By John B.. Plate tectonics The movement of the plates caused by convection in the mantle. Moves the continents and widens/compresses the oceans. –affects](https://reader038.vdocument.in/reader038/viewer/2022110323/56649d835503460f94a6a013/html5/thumbnails/12.jpg)
Oceans Position affect.Water changes
temperature slower than land and this reduces the variance in the area by radiating heat. Or absorbing heat.
![Page 13: By John B.. Plate tectonics The movement of the plates caused by convection in the mantle. Moves the continents and widens/compresses the oceans. –affects](https://reader038.vdocument.in/reader038/viewer/2022110323/56649d835503460f94a6a013/html5/thumbnails/13.jpg)
Future and past affects of continental drift.Past
Rhodinia was positioned at the south pole and caused the earth to freeze over
A massive drought stuck Pangaea before the dinosaurs.
FutureVast deserts will
form in the center of the continent.
A massive storm may form around the edge of the super continent with winds surpassing anything to date.
![Page 14: By John B.. Plate tectonics The movement of the plates caused by convection in the mantle. Moves the continents and widens/compresses the oceans. –affects](https://reader038.vdocument.in/reader038/viewer/2022110323/56649d835503460f94a6a013/html5/thumbnails/14.jpg)
Conclusions Although plate tectonics can have profound
affects on climate as seen in the video, there moment is so slow it will not have any noticeable affect on the climate within the next 100,000 years. However there may be an increase in volcanism which could cause widespread cooling and, as of today there is absolutely nothing man can do about it.
![Page 15: By John B.. Plate tectonics The movement of the plates caused by convection in the mantle. Moves the continents and widens/compresses the oceans. –affects](https://reader038.vdocument.in/reader038/viewer/2022110323/56649d835503460f94a6a013/html5/thumbnails/15.jpg)
Connections In my research I came across many references to global warming including greenhouse gas increases caused by man but also I found web site everybody should visit before calling anyone a wasteful self-centered pig. Don’t get me wrong I’m all for going green, but before drawing a conclusion see both sides open mindedly and then with skepticism.
http://www.skepticalscience.com/
![Page 16: By John B.. Plate tectonics The movement of the plates caused by convection in the mantle. Moves the continents and widens/compresses the oceans. –affects](https://reader038.vdocument.in/reader038/viewer/2022110323/56649d835503460f94a6a013/html5/thumbnails/16.jpg)
Bibliographyhttp://openlearn.open.ac.uk/mod/resource/view.
php?id=172207National geographic Chanel/ naked science-
when continents collide.www.scepticalscience.com/