Transcript www.sciencea2z.com

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?
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.
What began as a small crack in the Earth's crust is now the MidAtlantic 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.
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 up
1 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!!