how do they move?
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The Earth's crust -
Tectonic plates - How do they move? - How do they create landforms and what is the effect of plate movement?
The Earth's crust -
Tectonic plates - How do they move? - How do they create landforms and what is the effect of plate movement?
![Picture](/uploads/2/9/9/2/29921743/2288756.jpg?386)
Tectonic plates can move and float, even with their tremendous weight. They can do this by the composition of continental rocks. Continental rocks are much lighter than ordinary rocks, thus meaning the crust under the continents is different. For example the crust under the continents are approximate to 100 km's, where as in comparison, the crust under the oceans is generally only about 5 km's thick.
Basically plate tectonic because the Earth's lithosphere os heavier than the asthenosphere, located just below the lithosphere.
Like mentioned in the previous slide, most tectonic plates aren't visible to the our eyes, if you are to see anything, you will see the tips of the plate, thus meaning the roots are deep embedded into the ocean.
Basically plate tectonic because the Earth's lithosphere os heavier than the asthenosphere, located just below the lithosphere.
Like mentioned in the previous slide, most tectonic plates aren't visible to the our eyes, if you are to see anything, you will see the tips of the plate, thus meaning the roots are deep embedded into the ocean.
![Picture](/uploads/2/9/9/2/29921743/6114499.jpg?585)
In this image, you can see the different sections; trench, ocean, subduction, etc. You can see how the convection cell works and how it rotates. Also near the mid-oceanic ridge you can see the tectonic plates moving and retracting apart (from the arrows).