Plate Tectonics Project By: Ava Chernicoff
Divergent Plate Boundary's
A divergent plate boundary is a place were 2 plates are moving away from each other and new crust forms and magma rises to earths surface
There is a Divergent plate boundary at the mid Atlantic ridge Where in the world? There is a Divergent plate boundary at the mid Atlantic ridge
Magnetite points to magnetic north Basalt Rock Magnetite points to magnetic north Scientists have found the magnetite in basalt rocks recently erupted lines up with magnetic north, which is called normal polarity. They have found that in past eruptions the magnetite lined up with the south pole, which is called reverse polarity.
Convergent Plate Boundary's
When 2 pieces of land collide the only place for them to go is up When 2 pieces of land collide the only place for them to go is up. When they go up it causes mountain ranges.
Where in the world? There is a convergent plate boundary at the Himalayan mountain range and Tibetan plateau. They formed because of the collision between the Indian Plate and Eurasian Plate which began 50 million years ago and is still going today.
Lithospheric Plates Earth's crust is fractured into approximately 20 lithospheric plates. Each lithospheric plate is composed of a layer of oceanic crust or continental crust that makes an outer layer of the mantle
Transform
A transform boundary is when the two boundaries are moving away from each other.
Where in the world? One of the most famous Transform fault line is the San Andreas Fault. The San Andreas Fault is in California. The San Andreas Fault is a place where two Tectonic plates touch, the North American and Pacific Plates. The San Andreas Fault is about 800 miles long including all the curves.
Prepare for disaster! The San Andreas fault, which is a transform fault line is the cause for the great San Francisco earthquake in 1906. It was also the cause for the big Loma Prieta earthquake. Though, the San Andreas Fault was the cause for the Loma Prieta it did not happen on the fault line. It happened next to the fault line.
A story from a survivor of the Loma Prieta earthquake On October 17, 1989 at 5:04 PM I was going to Berkeley University and I was in Chemistry class. We were learning when all of a sudden everything started furiously shaking. We all knew it was a serious 7.1 earthquake. We got under our desks and waited it out. -Helen Chernicoff
Flashback to 1906 news At 5:12 a.m. on April 18, 1906 the people of San Francisco were awakened by an earthquake that would devastate the city. The main temblor, having a 7.9 magnitude, lasted about one minute and was the result of the rupturing of the northernmost 296 miles of the 800-mile San Andreas fault. -1906 News reporter
Hot Spots
Hot spots are places in the mantle where rocks melt and generate magma.
Where in the world? One of the most common hot spots is Hawaii. The Hawaii islands are made up of lots of Volcanos.
Active vs. Not Active There are a lot of volcanos in Hawaii and they were all active once but today only 2 are still active.
Sites http://dictionary.reference.com/browse/ divergent-plate-boundary http://www.kids-fun- science.com/divergent-boundary.html http://www.geolsoc.org.uk/Plate- Tectonics/Chap3-Plate- Margins/Convergent/Continental- Collision http://www.encyclopedia.com/doc/1G2 -3437800131.html http://www.sanandreasfault.org/Inform ation.html http://www.infoplease.com/spot/sanfra n1906earthquake.html http://volcano.oregonstate.edu/what-is- a-hot-spot
Thanks For Watching!
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