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What on the ocean floor is evidence that earths magnetic field changes?

Evidence that Earth's magnetic field changes can be found in the alignment of magnetic minerals in rocks on the ocean floor. As magma solidifies into new rock, the magnetic minerals within it align with the current magnetic field direction. By studying the alignment of these minerals in rocks of different ages along the ocean floor, scientists can track changes in the Earth's magnetic field over time.


What evidence shows that earth's magnetic field changes?

One piece of evidence is the study of ancient rocks that show reversals in magnetic orientation. Another evidence comes from observations of the movement of the magnetic poles over time. Additionally, observations of magnetic anomalies in the Earth's crust provide further evidence of changes in the magnetic field.


Why does the earths magnetic field change over time?

The Earth's magnetic field changes over time because that is the way that God makes it.


What evidence is there that the earths magnetic fields move?

Ancient pottery shows movement of the earth's magnetic field. Firing the pottery fixes the ambient magnetic field in the fired pottery.


Is earths core a source of earths magnetic field?

Yes.


How are the Earths magnetic field made?

It is made by the movement of the earths core and magma field


Earth's magnetic field results from the spinning of the?

The earths magnetic field results from deep in the earths core. Magnetic conduction from within the earths core is believed to be the cause of this.


Paleomagnetism is proven by evidence of changes in?

Evidence of paleomagnetism can be found in basalt that has cooled from lava. Other evidence is that any rock with magnetic minerals are presents, and sedimentary rocks where minerals form from ion bearing ground water.


Why do scientists believe that the inner core is the source of earths magnetic field?

because it has the hydro electric power to control the earths magnetic field


How do you know that there is not a huge permanent magnet at the earths core?

For one, the magnetic field changes continuously; this is not consistent with a permanent magnet.


What is earths magnetic field called?

It is Earths' "Magnetosphere".


Where does the earth's magnetic field get its power from?

earths magnetic field is generated by the circulation of liquid metal.