haley rubs a cotton cloth along a plastic strip. the plastic strip becomes positively charged. why did this happen? the plastic strip gained protons from the cotton.
the plastic strip lost protons to the cotton.
the plastic strip gained electrons from the cotton. or, the plastic strip lost electrons to the cotton.

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.