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Studying
the ocean floor

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The diverse layers in the rocks and sea floor show the changes that have occured in the magnetic poles over the years.

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the crust on the ocean floor changing

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The sea floor shows evidence

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By studying rock layer we can look at the type of rock in the layer and the materials they are made up of. This information can tell us if the poles were flipping during this time period or not. Specifically due to being able to see the gaps left in the rock due to pole being reversed.

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People have studied the ocean floor as well as the way sedimentary rock has made it's layers over the years, the more recent ones having a flow of a different direction

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The magnetic fields sometimes reverse causing the poles to flip

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by examining the geologic record when lavas or sediments solidify

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analyzing the sea floor

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The North has a stronger magnetic field.

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If you were to inspect the ocean floor there would be large amounts that have changed, as years go by there would be changes to the ocean floor.

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sea floor spreading

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every 10 years you could study the seafloor and sedimentary rocks to see if they have changed in anyway shape or form.

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By analyzing the sea floor

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the change in the crust on the ocean floor

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By studying the floor of the sea

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By analyzing the sea floor.

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About 800000 years ago south would be considered north and north would be considered south this is because the Earth’s magnetic poles have reversed, and the geological records of data about the seabeds 

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About 800000 years ago south would be considered north and north would be considered south this is because the Earth’s magnetic poles have reversed, and the geological records of data about the seabeds 

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-kaden

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By studying the seafloor, sedimentary rocks, or lava we can see how Earth's poles have changed

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We can tell the magnetic poles have changed, by examining the geological records of the seabed.  

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We can tell the magnetic poles have changed, by examining the geological records of the seabed.  

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-Annalee

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By studying the the sea floor.

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By analyzing the seabed that we have learned about.

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By analyzing the ocean seabed

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By studying the sea floor

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The fact that magnetic declination has changed so much in only a little over 150 years. This shows how much it could have changed in a million years, so it is very likely its poles have reversed.

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You can tell that the poles have reversed by looking at the geological records of certain rocks and sediment.

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We can see evidence of magnetic polarity reversals by examining the geologic record. When lavas or sediments solidify, they often preserve a signature of the ambient magnetic field at the time of deposition. Incredible as it may seem, the magnetic field occasionally flips over!

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By studying the geological record on when lava and sedimentary rocks solidify

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Hope - The change in the oceanic crust on the seafloor can see how the poles have moved.  

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Hope - The change in the oceanic crust on the seafloor can see how the poles have moved.  

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The reversals take place when iron molecules in Earth's spinning outer core start going in the opposite direction as other iron molecules around them. As their numbers grow, these molecules offset the magnetic field in Earth's core

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By studying the sea floor, sedimentary rocks, or lava we can see how earth's poles have changed.

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When the poles are reversed we can examine when lavas or sediments solidify.

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by examining the geologic record. When lavas or sediments solidify.

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Scientists found evidence that the magnetic poles on Earth have flipped by studying the sea floor. Every time a new amount of crust forms from magma pushing out of crevices in the ocean floor, magnetic traces are preserved every time, keeping a natural geological record of where the poles were located once.

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The evidence to support the theory that the magnetic poles of the Earth have flipped is because of the change in the oceanic crust on the bottom of the sea floor.

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You can examine the geologic record and how it has change dover time, and studying the sediments.

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By examining the geologic record, when lavas or sediments solidify they preserve a signature of the magnetic field at the time of deposition

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Earth's poles have flipped by looking at the geologic record.

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when the poles are reversed we can see sedimentary rock and lava solidify

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The evidence to support the theory that Earth’s magnetic poles have reversed is the change in direction of oceanic crust on the bottom of the sea floor.

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by examining the geologic record.

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Ben Moreland                          We can look at evidence that earth's poles have flipped by looking at the geologic record.    

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Ben Moreland                          We can look at evidence that earth's poles have flipped by looking at the geologic record.    

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Sedimentary rock/lava solidifying supports the theory that the magnetic poles have flipped.

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by examining the geologic record you can see the reversed poles and you can see by examining lave and sediments

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We can see evidence of magnetic polarity reversals by examining the geologic record. When lavas or sediments solidify

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The magness field occasion flips and we can underside this by observing lava sedimentary rock solidify