The reason the north pole of a bar magnet free to rotate points north is because othe south geographic pole of the earth is the earth's magnetic north pole. the south geographic pole of the earth is the earth's magnetic south pole. there is a net accumulation of negative magnetic charge at the earth's south geographic pole. there is a net accumulation of positive magnetic charge at the earth's north geographic pole. the north geographic pole of the earth is the earth's magnetic north pole.

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .