Magnetism Introduction - Bell ringer

_________ is a magnetic field is a vector force field that surrounds any magnetic material

• Magnetic field

• Magnetic force

• Magnetic poles

the lines form closed loops that _________

• leave the magnet at the south pole and enter it at the north pole.

• leave the magnet at the north pole and enter it at the south pole.

• Can move both ways

The strongest forces in bar magnets are at

• in the middle

• each end or pole

• north pole only

The magnetic field of a magnet is due to the magnetic fields produced by __________ in its atoms.

Each one of them acts like a small bar magnet.

• Protons

• Neutrons

• Electrons

________________ is a region within a magnetic material where the electrons are aligned in the same direction

• Magnetic force

• Magnetic domain

• Magnetic field

In magnets ___________

• like poles repel, unlike poles attract.

• like poles attract, unlike poles repel.

• Attraction and repulsion depends on the type of magnet

Earth acts like a giant magnet It is because ______________

• the Earth’s center is made of iron and nickle

• the Earth’s center is made of magma

• the Earth’s center is made of outer core and inner core