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Lauren Winner. The Mid-Atlantic Ridge. http://www.cliffshade.com/colorado/images/mid_atlantic.gif. The longest mountain range in the world, the Mid-Atlantic Ridge, runs right down the middle of the Atlantic ocean. It's the giant letter "C" between South America and Africa. Where is it?. - PowerPoint PPT Presentation
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The Mid-Atlantic Ridge
Lauren Winner
http://www.cliffshade.com/colorado/images/mid_atlantic.gif
Where is it?
The longest mountain range in the world, the
Mid-Atlantic Ridge, runs right down the
middle of the Atlantic ocean.
It's the giant letter "C"between South America
and Africa.http://geomaps.wr.usgs.gov/parks/pltec/noaaMidAtlanticRidgeSM.jpg
What is it?
What began as a small crack in the Earth's crust is now the Mid-Atlantic Ridge, a giant undersea mountain range. As magma rises to escape along this ridge new crust is formed, sea-floors spread, and continents drift around the globe.
Submarine ridge lying along the floor of the central Atlantic Ocean. It is a long mountain chain running about 10,000 miles in a general but curving north-south direction from the Arctic Ocean to the southern tip of Africa.
http://www.daviddarling.info/images/mid-ocean_ridge_diagram.jpg
How is it?
Formation of Ocean Crust:http://www.wwnorton.com/college/geo/egeo/flash/2_7.swfL
Sea Floor Spreading:http://www.wwnorton.com/college/geo/egeo/flash/2_5.swf
http://sites.google.com/site/brooksscienceclasswork/_/rsrc/1264086132582/plate-tectonics-landforms/mid atlantic ridge.jpg
Why is it?
Activity time!
You will need to collect:Wax paper
2 pieces of fruit roll up1 spoonful of frosting
(And consider washing your hands)
Directions
http://www.windows2universe.org/teacher_resources/snack_tect_overheads.html
How does it?
What did your cross section end up looking like?
The beginning of a mountain chain?http://www.physicalgeography.net/fundamentals/images/seafloor_spreading.gif
Memory Game
Cut out your cards from the sheet. Flip them over and arrange so you cannot
see the words. Play Memory trying to match the vocabulary
term with it's description!
Thank You!!
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