Use the diagram to explain how an electric bell works.

Predict what will happen if the south pole of one magnet is brought close to the south pole of another magnet. Use the key terms to explain your answer.

You have several different materials. Describe how you would test whether they are magnetic or nonmagnetic.

The following magnetic field diagram contains at least four mistakes. Explain each mistake.

Correct and redraw the given diagram.

Describe the forces that act when two opposite poles (one $\mathrm{N}$, one $\mathrm{S}$) of different bar magnets are brought closer together.

Draw the magnetic field when two unlike poles are held a short distance apart.

Use the field lines to predict what the magnets would do if allowed to move freely.

Describe how an electromagnet is different from a permanent magnet.