0
Rate this Study Guide:
☆☆☆☆☆Earthquakes
Magnetic fields do, because there's no such thing as an isolated magnetic "pole",
and a magnetic line always starts and ends at opposite poles of the same
magnetized object.
But electric fields don't. You can easily have a bundle of isolated positive charge
over here and a bundle of isolated negative charge over there, whereupon the
lines of the electric field start on one bundle and end on the other bundle.
But electric field lines can also exist in closed loops, and they do that in radio waves, where the electromagnetic field propagates with an electric field component and a magnetic field component, and they both form closed loops.
True
false
On dry, thick gravel
not magentic
240
Most great discoveries started out as accidental. The discoverer usually wondered why something happened and began investigating and experimenting to learn about it.
a copper wire carrying current and another magnet.
false
