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Tectonic Plates
| Question | Answer |
|---|---|
| what happens in convergent boundary | plates move colliding into eachother |
| what does convergent mean | colliding |
| what does subduction mean | going under |
| what does overriding mean | plate that stays ontop |
| Convergent - Volcanoes (ocean/ocean) | 1. one plate pushed into mantle, mantel melts and forms volcano 2. run parellel to (beside ) the boundary on the overriding plate |
| Convergent - Earhtquakes (ocean/ocean) | 1. deeper eq on overriding side bc one plate is being oushed UNDER the other 2. shallow eq on both sides of boundarys |
| Convergent - geochronology (ocean/ocean) | no definate age - subductting plate "dissapears" under the overriding plate |
| Convergent - geography (ocean/ocean) | 1. subduction deep ocean trench (deepest in world) 2. crust melts and magma rises 3. lava cools and forms new crust 4. forms island plate or island arc |
| Convergent - volcanoes (land/ocean) | 1. run parellel to the boundary along the land/overriding plate |
| Convergent - earthquakes (land/ocean) | 1.very deep eq on land side (overriding plate) bc the plate being pushed under the overriding plate |
| Convergent - geochronoly (land/ocean) | no age reported (no data) hard to tell bc the subducting plate is ¨recycled" bc it melts |
| Convergent - geography (land/ocean) | 1 deep ocean trench along the ocean side (subducting plate) 2 Mountains on overriding plate 3ocean plate subsucts underneath the land plate bc its less dese |
| Convergent - volcanoes (land/land) | 1. not as many volcanoes 2 any volcanoes will be near large mountains |
| Convergent - earthquakes (land/land) | 1 deep eq on overriding plate bc the other plate is underneath it shallow eq happen on either side |
| Convergent - geochronology (land/land) | no seafloor/no data |
| Convergent - geography (land/land) | very large mountains due to crust being pushed upward/cracking when the other plate slips underneath |
| Divergent - volcanoes (ocean/ocean) | 1 volcanoes down deep in ocean (not well recorded cause so far down) 2 ver few volcanoes make it all the way up to sea level |
| Divergent - earthquakes (ocean/ocean) | 1 shallow eq directly under the boundary bc they occur at thetop layer of the Eaths crust |
| Divergent - geochronology (ocean/ocean) | new seafloor: seafloor spreading- where new seafloor is created up through the earths crust and cools to form new crust |
| Divergent - geography (ocean/ocean) | long ocean ridges - underwater mountain range on the ocean floor |
| Divergent - volcanoes (land/land) | 1 can be lots of volcanoes directly over the boundary line bc when the plates pull apart the crust thins (milky way) magma/ mantel underneath has lots of pressure |
| Divergent- earthquakes (land/land) | shallow eq occur in the top layer of the crust directly over the boundary (follow plate boundary exactly) |
| Divergent - geography (land/land) | valley or lower lying area between the two plates |
| What happens in divergent boundary | the plates spread apart from eachother |
| what happens in transform boundary | the plates slide next to eachother |
| Transform - volcanoes (land/land) | 1 could have volcanoes (spread out over large area) 2 or no volcanoes |
| Transform - earthquakes (land/land) | many eq bc movement occurs at the top part of crust |
| Transform - geochronology (land/land) | 1 if there is ocean/ocean or ocean/land the seafloor CAN be older |
| Transform - geography (land/land) | 1 very few characteristics - they dont seem to fit any other boundaries 2 mountain and valleys |
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