Seafloor Striping
What happens when seafloor striping occurs?
Stripes occur on the seafloor when molten lava from underwater volcanos forms minerals that magnetically orient themselves according to the current magnetic field.
In a non magnetized ferromagnetic material how are domains aligned?
Randomly
Iron, Cobalt, Nickel
the strength of earths magnetic field..
varies from place to place
What is a magnetometer?
An instrument used to measure Earths magnetic fields
What is a magnetic domain?
An area in which atoms have their magnetic fields aligned in the same direction.
Nothing
What does the earth magnetic field do?
What causes the reversal of magnetic stripes?
Reversals of the polar ends of the Earth
What is the quickest way to demagnetize a magnet?
To hit it with a hammer.
A non magnetized ferromagnetic material
Where does Earth's magnetic field become horizontal?
Geographical pole
Where do magnetic stripes usually occur?
Mid-Ocean ridges
No
Are magnetic north and true north the same?
no, true north moves, and magnetic north is fixed and actually south
What is the typical width that each stripe spans?
10-30 miles
How are domains different than electrons?
Domains remain in place and rotate whereas electrons move
Is a penny ferromagnetic?
no
What is responsible for Earth's magnetic field?
Convective currents in Earth's core