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Geology

Rhett Strosin ∙

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∙ 2y ago

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Term1/7

Why do scientist think earths core contains iron

Definition1/7

other orbiting bodies contain more iron than earths crust does

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What is it called when a seismic wave bounces backward as it reaches a boundary

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Reflection

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After an earthquake which type of seismic wave arrives first at a seismometer

Definition1/7

P waves (APEX)

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Rocks in ocean crust are as old as

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200 million

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Why do scientists think the earths core contains iron

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Iron is magnetic which forms the Earth's magnetic field.

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Why is ocean crust subducted under continental crust

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The oceanic crust is denser

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How does the age of the oldest continental crust compare to the age of the oldest ocean crust-

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The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.

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Cards in this guide (7)

Why do scientist think earths core contains iron

other orbiting bodies contain more iron than earths crust does

What is it called when a seismic wave bounces backward as it reaches a boundary

Reflection

After an earthquake which type of seismic wave arrives first at a seismometer

P waves (APEX)

Rocks in ocean crust are as old as

200 million

Why do scientists think the earths core contains iron

The dynamo theory states that Earth's magnetic field is created in the layer known as the

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Geology

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Geology

The shadow zone exists because

In which layer is the temperature the highest

Which best describes earths north magnetic pole

Magnetic stripes on the seafloor are caused in part by

Plate Tectonics

Magnetic striping is evidence of

What mechanical layer lies above the core

The shadow zone exists because

The bending of a seismic wave as it crosses a boundary is called

Plate Tectonics

What is the mechanical layer of Earth that has the most active convection currents

Why do scientist think earths core contains iron

Which best describes earths north magnetic pole

The sun's pole reversals are tied to its

Earth Sciences

What is the mechanical layer of Earth that has the most active convection currents

Which best describes earths north magnetic pole

The sun's pole reversals are tied to its

How does the age of the oldest continental crust compare to the age of the oldest ocean crust

Plate Tectonics

What is the mechanical layer of Earth that has the most active convection currents

The shadow zone exists because

What best describes Earth's north magnetic pole

The dynamo theory states that Earth's magnetic field is created in the layer known as the

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