What is the Earth's magnetic field?
Q: What is the Earth's magnetic field?
A: The Earth's magnetic field is the magnetic field that surrounds the Earth, which is sometimes called the geomagnetic field.
Q: What creates the Earth's magnetic field?
A: The Earth's magnetic field is created by the rotation of the Earth and Earth's core.
Q: What is the function of the Earth's magnetic field?
A: The Earth's magnetic field shields the Earth against harmful particles in space.
Q: How stable is the Earth's magnetic field?
A: The Earth's magnetic field is unstable and has changed often in the history of the Earth.
Q: How is the Earth's magnetic field generated?
A: The Earth's magnetic field is thought to be generated by the different speeds of the two parts of the core as the Earth spins, creating the magnetic field as though it had a large bar magnet inside it.
Q: What do magnetic poles create?
A: Magnetic poles created by the Earth's magnetic field are near to the geographical poles.
Q: What applications does the Earth's magnetic field have?
A: The geomagnetic field is used by compasses to find directions and by many migratory animals when they travel long distances each spring and fall. The magnetic poles will trade places during a magnetic reversal.
