Question

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attraction repulsion
3
magnetic fields form closed loops, beginning at a magnets north pole. use this information to fill in the blanks to complete the sentences. not all answer choices will be used.
the two magnets shown in the diagram will __________ each other. the ________ pole of the magnet on the left faces the __________ pole of the magnet on the right.
attract repel north south
about 2,600 years ago, farmers in the greek city of magnesia noticed strange stones in their fields. although gray and dull, these stones did something incredible: they moved! the rocks were pulled towards the farmers iron tools by an invisible force. to some, this was evidence of the stones soul. to others, the rocks remained a mystery.
centuries later, similar stones were discovered in china. scholars named them tzuh-shih, or \loving stones,\ because of the way they \hugged\ iron. in english, these remarkable rocks are called lodestones.
lodestones, like the one pictured here, are permanent magnets. this means that they continuously produce their own magnetic fields. other permanent magnets include compass needles and refrigerator magnets, although these are not found in nature.
permanent magnets can temporarily magnetize other materials. consider steel, a metal used to build skyscrapers, refrigerators, and washing machines. steel is not a permanent magnet. one steel washing machine will not be pulled towards another because neither one produces a magnetic field on its own.
however, a steel washing machine can become magnetic when its exposed to a permanent magnets field. the washing machine will lose its magnetism when the field is removed.
for example, a lodestones magnetic field will temporarily magnetize the steel washing machine. while the lodestone is nearby, the washing machine produces a magnetic field, too. when the two fields interact, bam! youve got a lodestone, paperclips, safety pins, screwdrivers, and forks stuck to your washing machine.
while pulling a lodestone off a washing machine might be a bit challenging, it certainly does highlight why humans have been drawn to magnets for millennia.

Explanation:

Step1: Identify magnetic interaction

The field lines show the left magnet's North pole facing the right magnet's South pole. Opposite poles attract, so the magnets will attract each other.

Step2: Match left magnet pole

The left magnet's labeled pole is North (black "N").

Step3: Match right magnet pole

The right magnet's labeled pole is South (red "S").

Answer:

1. attract
2. North
3. South