Plate Tectonics
While you watch, think about...
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Watch how the different plates have moved around over the past 3 billion years.
--Are these fast changes or slow changes? --What is causing these plates to move around? --Are there tectonic plates under our oceans? FOR AN INTERACTIVE VERSION, GO TO: |
Plate Tectonics!
Look at the diagram below.
--How are different ways that the crust plates move?
--What different thigns can happen at moving plate boundaries?
--How are different ways that the crust plates move?
--What different thigns can happen at moving plate boundaries?
Audio Guide
Part 1: www.youtube.com/watch?v=DsabIb9XfBU Part 2: www.youtube.com/watch?v=BLBfhQ3wooQ Part 3: https://www.youtube.com/watch?v=UV3Icqb7j9Q |
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Divergent: Splits Apart
--Causes Rift Valley
--Creates Mid-Ocean Ridge --Most found under Atlantic Ocean --New crust is created here |
Transform: Slides Past
--Cause Earthquakes
--Does NOT create volcanoes --Most common boundary --Found on land and under ocean --Sometimes called "Fault Lines" |
Convergent: Comes Together
(also known as) Subduction: One Goes Under --Creates Earthquakes
--Creates volcanic activity --Oceanic plate gets melted down --This destroys one crust plate |
Plate Boundaries: What happens at each one?
Notice that there is a correlation. What boundary seems to have a lot of volcanoes?
Now look at divergent boundaries. What landform happens under the ocean at divergent boundaries?
What about earthquakes? Where are they most common? Where can they sometimes happen?
Look at this map of North Carolina.
--What geological event do we experience in Western NC?
--What kinds of boundaries could be in this area?
--How do we know which boundary is in our area?
--What geological event do we experience in Western NC?
--What kinds of boundaries could be in this area?
--How do we know which boundary is in our area?
This allows you to create and smash together your own plates!
To get the best experience... ...look at both tabs. ...drag the tools (ruler, density meter, thermometer) to different parts of your crust. ...see what happens to different types of crust when they come together, spread apart, or scrape past each other. ...try to recreate each of the four plate boundaries. |
A phenomenal resource!!
So what will happen in the future?
Scientists don't know for sure what will happen in the future.
--How can scientists make predictions about the continents and their positions? --What new types of landforms may be created in 250 million years? |
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