Juanita sticks a nail to the end of a bar magnet. She then sticks a second nail to the first, then another to that one, and so on. When she gets to the seventh nail, it falls off the sixth nail.
Which statement best describes the forces acting on the seventh nail?
The force of magnetism is equal to the force of gravity.
The force of gravity is stronger than the force of magnetism.
The force of magnetism is stronger than the force of gravity.
The force of gravity is stronger than the force of magnetism.
The magnetic field lines of a bar magnet spread out from the
north end to the south end.
south end to the north end.
edges to the center.
center to the edges.
The magnetic field lines of a bar magnet spread out from the north end to the south end.
Use the drop-down menu to complete each statement.
A north pole will
a north pole.
A north pole will
a south pole.
A north pole will repel a north pole.
A north pole will attract a south pole.
Three magnets are placed on a plastic stick as shown in the image. The magnets are floating above each other because the
, which causes the magnets to push away from each other.
Three magnets are placed on a plastic stick as shown in the image. The magnets are floating above each other because the like poles of the magnets repel each other, which causes the magnets to push away from each other.
Which statements accurately describe Earth’s magnetic field? Check all that apply.
The magnetic field lines flow from Antarctica to northern Canada.
The magnetic field is created by magnetic rocks on the surface.
The magnetic poles line up exactly with Earth’s geographic poles.
The magnetic field is generated in Earth’s core.
The magnetic field is similar to the magnetic field of a bar magnet.
The magnetic field is generated in Earth's core.
The magnetic poles do not line up exactly with Earth's geographic poles.
The magnetic field is similar to the magnetic field of a bar magnet.