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!!