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What does it mean that the earth's magnetic field changes polarity?
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Will the polarity of the earths magnetic field change in 2012?
There is no reason to believe that the Earth's magnetic field will change any time soon... or, for that matter, that anything extraordinary is going to happen in 2012.
Earths magnetic field does not affect what?
Other planets
How can scientists tell when changes occur in earths magnetic field?
Scientists follow the magnetic field lines of the earth and measure them regularly. They will compare the earlier measurements and note the changes in position of the magnetic axis and decide if it is changing or not! Also if there are sudden changes observed in magnetic field lines bec of solar flares from sun. Magnetism is an interesting chapter! learn more by watching and subscribing to this space @PhysicsFusion-sm3tr Hope this helps
Which happens to the magnetic field of a wire when you change the direction of the current in the wire?
The polarity of the magnetic field of a wire reverses when you change the direction of the current in the wire.
Which type of current is produced by a wire breaking magnetic field lines and changing the polarity?
alternating
How is earths magnetic field used by people and animals?
the earths magnetic signature is a negative polarity signature
Will the polarity of the earths magnetic field change in 2012?
There is no reason to believe that the Earth's magnetic field will change any time soon... or, for that matter, that anything extraordinary is going to happen in 2012.
Describe how the polarity of earth's magnetic field is recorded in the sea floor?
The position of Earth's magnetic field changes over geologic time, pole is located near Earth's North Pole, a condition called normal polarity.
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.
How is the polarity of Earth's magnetic field recorded in the sea floor?
The polarity of the Earth's magnetic field is recorded in igneous rocks, and reversals.
Describe how the polarity of earth's magnetic field is recorded in the sea-floor?
The polarity of the Earth's magnetic field is recorded in igneous rocks, and reversals.
When new basalt forms along mid-ocean ridges it become magnetized?
accorsing to the earths magnetic field
How does earths magnetic field change over time?
It changes over time through direction and strength. So therefore Magnetic North becomes Magnetic South.
What is the significance of the patterns of offsets along the mid-ocean ridge?
the matching patterns on either side of the mid-ocean ridge could be explained by new ocean crust forming at the ridge and spreading away from it as ocean crust forms it obtains the polarity of the earth's magnetic field at that time over time the strength of the earths magnetic field changes when new ocean crust forms at the center of the spreading it obtains a new kind of magnetic polarity over time a series of magnetic ''stripes'' are formed
What is earths magnetic field called?
It is Earths' "Magnetosphere".
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
