0
Scientists are still struggling on what are the sources of earth's magnetic field (EMF). The facts support the notion that the EMF has reversed its direction several times in earth's history. When the EMF reverses, the EMF intensity will be weakened. Some evidence supports that the EMF intensity is now peaking and is due for a complete reversal in thousands of years. So yes, the EMF will be weakening. What we should worry about is what effects do the sun's activities have upon the EMF in our lifetime. The solar winds can weaken the EMF too. Scientists are predicting major solar activities coming (check the related link).
======================
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoYes. It changes in both strength and direction. In the short term, from month to month, fluctuations in the Earth's core causes the magnetic field to change in intensity. Over the long term, thousands of years, the magnetic poles reverse: Magnetic North becomes Magnetic South.
Add your answer:
Earn +20 pts
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.
Where does the earth's magnetic field get its power from?
earths magnetic field is generated by the circulation of liquid metal.
What creates the Earths magnetic field?
Scientists believe that it is the movements in the liquid outer core that create the magnetic field. Earth's magnetic field affects the whole planet.
About how long ago was the last time earths magnetic field reversed?
About 41,000 years ago.
What is that angle made by the earths magnetic field with a horizontal plane at a point on the earth?
It's called the Dip.
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
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.
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 is earths magnetic field used by people and animals?
the earths magnetic signature is a negative polarity signature
Where does the earth's magnetic field get its power from?
earths magnetic field is generated by the circulation of liquid metal.
What is the magnetic field called?
It is Earths' "Magnetosphere".
What is the region of the earths magnetic field?
magnetosphere
Does the earths magnetic field cause the earth to tilt?
No. Earth's magnetic field does not affect its axis of rotation.
What is another word for earths magnetic field?
= An effect of the magnetic field is "Van Allen radiation belt" =
What is earths field that reverses from time to time?
The Earth's Magnetic field.
