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geology 3314

Test 1

QuestionAnswer
according to geologist, the break up of Pangea began? 200 million years ago
flood lavas of basalt began spreading over 2x the size of Texas about how long? and what two continents? 135 million years ago, south America and africa
there are 7-9 major tectonic? and20 tectonic? across the earth plates
Observation** New mountains are ? and Old mountains are? New-sharp! Old- round!
about 30 million years ago sea floor north of india began to rise to form? Himalaya mountains
part of these mountains are moving? at 10mm/year and traveling? 15 mm/year up-10mm/year north- 15mm/year
in the Himalaya mountain over 30,000 people have been killed over the last 100 years by ? Earthquakes
heat convection currents below the crust in the ? carry heat from earths? these convection currents are thought to move the ? plates around the earth 1. mantle 2. core 3. tectonic
black smokers are underwater? geysers
many of the youngest rocks are found along the mid-ocean? ridges
Iceland sits on top of the mid atlantic ridge and is being pulled apart at a rate of? 2 inches a year
most of earths volcanoes and earthquakes are found along and above what zones? subduction
mid oceanic ridges are the? and subduction zones are the ? of old dense oceanic ridges. 1. crust factories 2. graveyards
old dense oceanic floor/plates are? under the continents. they carry the rest of their plates with them. subductive
old ocean basaltic crust carries water down into the mantle. This water then travels upwards and explodes out of? Valcanoes
Hawaii Island chain is a product of and is located above a ? Hot spot
the ? plate is moving over a ? Hot spot
The tallest mountain rising from the ocean floor is? killowa
the ? plate has been measured moving about 2 1/2 inches per year to the northwest. Pacific
the volcanoes to the NW are ? in the Hawaiian chain Oldest
Mid- Atlantic ocean ridge is moving apart at a rate of about ? 2inches per year
Created by: snash3
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