X1011590170-00074-18796</DOCNO> Untitled Lecture #26: Rock Magnetism and Sea-floor Spreading The Earth's magnetic field - invisible lines of magnetic force surrounding the earth deflect magnetized objects, such as compass needles, that are free to move.
(Rock Magnetism and Sea-floor; Spreading; The Earth's magnetic field - invisible lines of magnetic force) (magnetic force; surrounding; the earth deflect magnetized objects, such as compass needles) (compass needles; are; free to move)
Rock Magnetism and Sea-floor magnetic force compass needles
Spreading surrounding are
The Earth's magnetic field - invisible lines of magnetic force
the earth deflect magnetized objects, such as compass needles
free to move