Which of the following is TRUE? *
A. Magnetic force requires contact or touch.
B. Magnetic force is strong inside the magnet.
C. The magnetic force of temporary magnets becomes stronger over time.
D. The arrow of a compass is always attracted to the Earth's north magnetic pole. Which of the following can be detected by a compass? *
A. potential energy
B. electricity
C. gravity
D. the Earth's North pole
Where is the magnetic field of a magnet strongest? *
A. inside the magnet
B. at the poles of the magnet
C. same all through the magnet
D. cannot be determined
Magnet A can hold three metal hairpins, while magnet B can hold six metal hairpins. Which of the following is TRUE? *
A. Magnet B is stronger than magnet A.
B. Magnet A is stronger than magnet B.
C. Magnet A and magnet B are equally strong.
D. Magnet A is bigger than magnet B.
Which of the following would not be attracted to a magnet? *
A. scissors
B. needle
C. rubber bands
D. thumb tacks
How are temporary magnets different from permanent magnets? *
A. Temporary magnets become stronger over time.
B. Temporary magnets become weaker over time.
C. Temporary magnets are always magnetic.
D. Temporary magnets are stronger than permanent magnets.
Which of the following is magnetic? *
A. copper
B. iron
C. silver
D. gold