Plate Tectonics & the Ocean

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Presentation transcript:

Plate Tectonics & the Ocean

What are Plate Tectonics?

What are Plate Tectonics? A theory that separates the Earth’s crust into different plates which are all dynamic http://cdn.whatarethe7continents.com/wp-content/uploads/2015/01/tectonic-plates-map-world.png

Plate Movements

Plate Movements Convergent Divergent Transform http://changingworldci.weebly.com/uploads/3/0/5/5/30559477/144396_orig.jpg

http://oceanexplorer.noaa.gov/facts/plate-boundaries.jpg

Divergent-Ocean Ridges Convergent-Volcanoes Transform-Earthquakes http://oceanexplorer.noaa.gov/facts/plate-boundaries.jpg

Exploring Seafloor Spreading Formation of new oceanic crust at divergent boundaries http://www.regentsearth.com/ILLUSTRATED%20GLOSSARY/SeaFloorSpreading.htm

Exploring Seafloor Spreading

How do plate tectonics and the ocean relate/affect each other?

Mid Ocean Ridges Underwater Volcanoes Tsunamis

Transform Boundaries cause Earthquakes How does this affect the ocean?

Earthquakes to Tsunamis Large shallow earthquakes Fault or Epicenter near the ocean floor Magnitude of 7.5 or larger causes destructive tsunamis Energy from the earthquake is transferred through the ocean water Shape of the seafloor is also linked to destructive tsunamis (the steeper the incline the higher the tsunami-H2O displacement) http://itic.ioc-unesco.org/index.php?option=com_content&view=article&id=1158&Itemid=2026

Can you outrun a Tsunami? Helpful Forumulas for Preparation: 1. X m/s * (1m/1,000km) * (60s/1min) * (60min/1hr) = X km/hr 2. 3. distance/time=velocity Credit: NOAA Sea Grant, Oregon State University

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Help your friends… You have one friend in Kodiak, Alaska and another friend in Kauai Island, Hawaii. You want to call them to let them know when the tsunami will reach them so you will need to figure out the time it will take for the tsunami to travel to each friend. (Hint: search distance of the epicenter to the location of your friend.) Who did you call first? Why?

Earth Liquidification

Tsunami Video