Processes That Shape Ocean Basins and Continental Drainage

Processes That Shape Ocean Basins and Continental Drainage Section 2. 3

http: //www. toiletovhell. com/2015/04/

The Plan Class and group discussions, animations, video clips, and a drawing activity. I can define the term lithosphere and describe the processes that influence its shape. I can describe the geological features of the ocean floor and describe how they are formed.

Earth is 4. 5 - 4. 6 billion years old! It is in a constant state of change.

Earth’s Layers 1. Core 2. Mantle 3. Crust https: //wikis. engrade. com/earthssurfacequiz 2/es 1

The Lithosphere The lithosphere is the solid, outer layer of the Earth. http: //www. claseshistoria. com/bilingue/1 eso/relief-lithosphere. html

Lithosphere It is made of rock that has been broken into huge, moving pieces called tectonic plates. http: //aquarium. ucsd. edu/Education/Learning_Resources/Voyager_for_Kids/earth_ puzzle/look_beneath. html

Plate Tectonics • These tectonic plates move constantly and slowly by convection currents within Earth.

Earth as a Jigsaw Puzzle http: //aquarium. ucsd. edu/Education/Learning_Resources/Voyager_for_Kids/earth_puzzle/index. html

Evidence of Plate Tectonics http: //hyperphysics. phy-astr. gsu. edu/hbase/geophys/platevid. html

http: //pubs. usgs. gov/gip/dynamic. html

Plate Tectonics The movements of the plates have shaped the geological features on the ocean floors and many of those on the continents. https: //prezi. com/mplhnmeixltq/plate-tectonics/

Drawing Activity What do you think the bottom of the ocean would look like if all of the water were drained out?

Geological Features Due to Plate Tectonics 1. Mid-ocean ridges 2. Continental shelves 3. Volcanic islands 4. Seamounts 5. Trenches

Mid-Ocean Ridges Mid-ocean ridges form where molten rock pushes up from the interior of the Earth. On either side of the ridge are two different plates that are slowly moving away from each other as the molten rock hardens into new crust.

Continental Shelves The continental shelves are shallow areas around the edges of continents. They are mainly sedimentary deposits of materials eroded off the continents.

Volcanic Islands Volcanic islands are formed by volcanoes that grow up from the ocean’s floor. http: //www. britannica. com/EBchecked/topic/437647/Pacific-Islands

Seamounts are underwater volcanoes that do not come all the way to the ocean’s surface. http: //www. geology 4 today. com/restless-oceans. html

Trenches are long, deep depressions in the ocean bed. They form where two plates are moving toward each other. http: //www. geology 4 today. com/restless-oceans. html

Mariana Trench The deepest part of the world’s oceans. It is about 2, 550 km long, but only 69 km wide. http: //www. whoi. edu/main/nereus/mariana-trench-2009

Mountains http: //www. steve-hartland. com/summer/rock-climbing/

Mount Everest Formed by plate tectonics. Indo-Australia plate pushes up against the China and Eurasian plates.

Continental Drainage Systems The same forces that shape the ocean basins also build the continental divides. At the edge of the continent, two plates meet and push against each other, which cause wrinkles in the continents’ surfaces and pushes up. http: //olliebray. typepad. com/olliebraycom/2009/07/reflec tions-from-the-great-divide-mountain-bike-trail-2 -of-10 canada-banff-al-eureka-mo. html

Mauna Kea Formed by plate tectonics. Formant volcano. Created by magma breaking through the lithosphere. http: //kaobio. wikispaces. com/Mauna+Kea

Rocky Mountains