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Plate Tectonics Project
Transcript of Plate Tectonics Project
What is plate tectonics?
Modern data 1
Why do tectonics plates move?
Tectonic plates move because they are on top of the liquid mantle that is moving constantly on the inside of the planet.
HOW OFTEN DO THEY MOVE:
According to http://pnsn.org/outreach/about-earthquakes/plate-tectonics ,
The North American plate is moving at about 1 inch per year and a plate on Mexico is moving at about 1.6 inches per year.
Plate tectonics is the theory that Earth's crust is divided into separate plates of crust that move over the mantle from deeper in the Earth.
Modern data 2
STUDIES OF THE SEA FLOOR:
The bottom of a body of water is known as the Benthic zone, no matter how deep it goes. In coastal waters the sea floor leans or lays on earths surface and is most likely less than 218 yards deep. Most of the ocean floor lays on the ocean's crust and is between 4374 yards to 6561 yards deep. Working at deep measures like this requires special tools that only certain people have for this job also the skills to collect the data needed.
Identifying plate boundaries
THE RING OF FIRE: The ring of fire is an arc shaped area in the Pacific Ocean that has 452 volcano's, 3/4 of the worlds active and dominant volcano's. The Ring Of Fire is a divergent plate boundary and this explains the volcano's.
Identifying plate boundries
THE TYPES OF PLATE BOUNDARIES: There are 3 types of plate boundaries: Divergent, Convergent and Transform.
Divergent plate boundaries occur when 2 tectonic plates move apart from each other which cause lava to spew from the earth and can start earthquakes and sometimes can create tsunamis.
Convergent plate boundaries are when 2 tectonic plates move into each other and it can cause earthquakes and tsunamis.
Transform plate boundaries are made when tectonic plates slide on top of each other which also creates massive earthquakes and tsunamis.
A long time ago, before people had the technology we have today, many paleontologists observed that the continents that are today were a long time ago, connected making one super-continent. A man named Magellan found the plate tectonic theory of a "puzzle-like-fit" super-continent. He found evidence of where the separate shapes of our continents look like puzzle pieces to a big puzzle( the continents connecting together to make a super-continent). Studies show that based on the border shapes of the continents South America, Africa, Greenland, Australia, and Antarctica, the continents were conjoined. South America was connected to Africa, Africa was connected to Antarctica. Antarctica was connected to Greenland and Greenland was connected to Australia.
Convection currents are the transportation of heat from the movement of warm particles into colder fluids. Heat circulates from a long distance from the earth’s surface and melts the rock making magma. Which causes the magma to flow, and the tectonic plates at the surface move. The tectonic activity on the Ring of fire is constant. The Ring of fire is made out of divergent tectonic plate boundaries. (more info is on Nicole's discussion on identifying plate boundaries).
Resulting features .1
VOLCANIC ACTIVITY: The result of divergent plate boundaries is usually many volcano's forming from cracks in the ground that spew lava or magma from inside the earth.
Plate boundary identification
Plates we have on our planet's surface move because of the heavily intense heat in the Earth's core that causes molten rock in the mantle layer to melt a little and move.
Divergent boundaries -- where new crust is made as the plates seperate from each other.
Convergent boundaries -- where crust is destroyed as one plate seperates and moves under another plate
Transform boundaries -- where crust is neither created or destroyed as the plates slides past each other.
Some results of plates moving are:
They may collide into each other.
They may crumble if they hit each other hard enough
*they may pass over each other or block its path
EARTHQUAKES: The result of all 3 plate boundaries is earthquakes that are caused by the movement of the tectonic plates.
Resulting features .3
TSUNAMIS: The result of 2 plate boundaries, sometimes 3, is tsunamis which is when an earthquake occurs and forces the water forward and makes a wave grow into a very tall and wide forceful wave.
Resulting features .2