A. Like poles attract each other, and unlike poles repel each other.
B. Like poles repel each other, and unlike poles attract each other.
C. Both like and unlike poles can attract and repel each other depending on the surrounding materials.
D. none of the above
A. Magnetic fields are vector quantities.
B. Magnetic fields have both magnitude and direction.
C. Magnetic field strength increases as the distance from the magnetic source increases.
D. Magnetic fields are regions in which magnetic forces can be detected.
A. the direction toward which the south pole of a compass needle points
B. the direction toward which the north pole of a compass needle points
C. the direction that is parallel to the imaginary magnetic field lines
D. the direction that is perpendicular to Earth’s magnetic field
A. It is stronger.
B. It is weaker.
C. It is entering the magnet.
D. It is leaving the magnet.
A. Magnetic field lines form open or closed loops.
B. Magnetic field lines appear to begin at the north pole of a magnet.
C. Magnetic field lines have no beginning or end.
D. Magnetic field lines appear to end at the south pole of a magnet.