Compare and contrast Alfred Wegener's Continental Drift Theory to the modern day Plate Tectonis Theory.

Wegener thought that the continents themselves plowed through the ocean florr from Pangaea to their current positions while the Plate Tectonics theory says plates with continents and oceans on them have moved on the upper part of the mantle.

Describe which type of crust will subduct under another and why.

Oceanic crust will subduct under continental crust because it is denser than continental. Oceanic denser than continental

Relate convection currents to plate tectonis.

Magma rises by convection currents and pushes up through the plate tectonics to find an opening.

Describe Earth layers by thickness and density. (continental vs. oceanic crust)

Crust- thin, not very dense, bother plates Mantle-Very dense, oceanic, very thick Outer Core- moderatley thick and dense, no plates Inner Core- moderatley thick and dense, no plates

Identify and describe Earth layers including which layers make up the plates, which layer has plasticity, which layers make up the mantle, and the core's states of matter (from a diagram)

Lithosphere-makes up plate Asthenosphere-plasticity, liquid and solid Mesosphere-plasticity, lqiuid and solid Outer Core-liquid Inner Core-solid

Describe the process of seafloor spreading and the result.

Hot, less dense material below Earth's crust rises toward the surface at the mid-ocean ridges creating new seafloor.

Describe processes that create each type of rock in the rock cycle.

Sedimentary- sediments are compacted and cemented together Metamorphic- high temperature/pressure/hardening Igneous- magma cools and hardens

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Test #3 Study Guide

Rock Cycle, Earth Layers, and Plate Tectonics

Question	Answer
Compare and contrast Alfred Wegener's Continental Drift Theory to the modern day Plate Tectonis Theory.	Wegener thought that the continents themselves plowed through the ocean florr from Pangaea to their current positions while the Plate Tectonics theory says plates with continents and oceans on them have moved on the upper part of the mantle.
Describe which type of crust will subduct under another and why.	Oceanic crust will subduct under continental crust because it is denser than continental. Oceanic denser than continental
Relate convection currents to plate tectonis.	Magma rises by convection currents and pushes up through the plate tectonics to find an opening.
Describe Earth layers by thickness and density. (continental vs. oceanic crust)	Crust- thin, not very dense, bother plates Mantle-Very dense, oceanic, very thick Outer Core- moderatley thick and dense, no plates Inner Core- moderatley thick and dense, no plates
Identify and describe Earth layers including which layers make up the plates, which layer has plasticity, which layers make up the mantle, and the core's states of matter (from a diagram)	Lithosphere-makes up plate Asthenosphere-plasticity, liquid and solid Mesosphere-plasticity, lqiuid and solid Outer Core-liquid Inner Core-solid
Describe the process of seafloor spreading and the result.	Hot, less dense material below Earth's crust rises toward the surface at the mid-ocean ridges creating new seafloor.
Describe processes that create each type of rock in the rock cycle.	Sedimentary- sediments are compacted and cemented together Metamorphic- high temperature/pressure/hardening Igneous- magma cools and hardens

Created by: c0711787

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