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Author Question: Mount St. Helens and the other Cascade volcanoes are ________. (Read 53 times)

roselinechinyere27m

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on: Feb 28, 2020

Question 1

Oceanic lithosphere subducts (sinks into the asthenosphere) because ________.
◦ the upwelling magma at divergent boundaries pushes the lithospheric plate into the asthenosphere
◦ old oceanic lithosphere is more dense that the asthenosphere
◦ the pressure from two plates colliding forces one plate into the asthenosphere
◦ the convection of the mantle pulls the lithosphere into the asthenosphere

Question 2

Mount St. Helens and the other Cascade volcanoes are ________.
◦ a row of young, active, shield volcanoes built as western North America moved over a hot spot deep in the mantle
◦ young, active stratovolcanoes built on a continental margin above a sinking slab of oceanic lithosphere
◦ old, deeply eroded stratovolcanoes built before the Pacific Ocean existed
◦ old, deeply eroded, basaltic shield volcanoes built when western North America was over the present-day site of the Hawaiian hot spot
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Marked as best answer by roselinechinyere27m on Feb 28, 2020

rosiehomeworddo

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Reply #1 on: Feb 28, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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roselinechinyere27m

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Reply 2 on: Feb 28, 2020
Excellent

bulacsom

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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