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Earth's Layers

QuestionAnswer
How many layers does Earth have? 4
What are the main layers of the Earth? Crust, mantle, outer core, and inner core.
The layer that is like a thin shell around the Earth. It includes both the dry land and ocean floor. It is made of silica and magnesium. Crust
The layer that is made of hot rock. It is silicon, oxygen, iron and magnesium. It is the largest layer. Mantle
What was the super continent called? Pangaea
Forces that build up the Earth Constructive forces
Forces that wear down the Earth Destructive forces
Who developed the theory of continental drift? Alfred Wegener
What theory is this- All land was once one land mass but then drifted away into their current locations. Continental drift
Plates that pass each other Transform Boundries
Plates that go into the other Convergent Boundries
Plates that go away from eachother Divergent Boundries
What theory- Pieces of crust is always in motion, constantly changing the Earth. Plate tectonics
This layer is made of liquid iron and nickel and surrounds another layer. It is very hot Outer core
The solid stone part of the mantle and crust Lithosphere
The depper, weak plastic like part of the mantle Asthenosphere
The innermost layer made of nickel. Almost as hot as he sun and innermost layer Inner core
Vibration waves set off from earthquakes. They tell how the earth is set up by their speed and paths. Seismic waves
Crust that holds oceans, is denser, made of basalt and is thinner. oceanic crust
Crust that holds continents, less dense, made of granite, and thicker continental crust
What was the evidence used to support continental drift? evidence from land, climate, and fossils
Why was Wegener's theory rejected He couldn't explain how the continents moved
What happens when two plates carrying continents collide? They push against each other until they buckle, forming mountains
What happens when two plates carrying oceans collide? The denser one falls beneath the other, forming trenches
What happens when a plate carrying ocean collides with a plate carrying land? The ocean one falls beneath the other, because it is denser
Created by: 16mcosta
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