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6.a hypothetical continent including all the landmass of the earth
7.a divergent boundary or divergent plate boundary is a linear feature that exists between two tectonic plates (2 Words)
9.A volcanic crater is a circular depression in the ground caused by volcanic activity.
14.is fragmental material produced by a volcanic eruption regardless of composition, fragment size or emplacement mechanism.
15.the gradual movement of the continents across the earth's surface through geological time. (2 Words)
1.In plate tectonics, a convergent boundary, also known as a destructive plate boundary, (2 Words)
3.a theory explaining the structure of the earth's crust (2 Words)
4.long, narrow opening or line of breakage made by cracking or splitting, esp. in rock or earth.
5.a cone formed around a volcanic vent by fragments of lava thrown out during eruptions. (2 Words)
8.a volcano built up of alternate layers of lava and ash.
11.German meteorologist and geophysicist: originated theory of continental drift.
12.a broad, domed volcano with gently sloping sides, characteristic of the eruption of fluid, basaltic lava.


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