What is magetism
The atom
Making and changing magnets
Earth as a magnet
The magnetosphere
100
any material that attracts iron and materials that contain iron
What is a magnet?
100
smallest particle of an element
What is an atom?
100
a magnet made from a material that easily loses its magnetism
What is temporary magnet?
100
just like a _________, Earth has a magnetic field surrounding it and two magnetic poles
What is a bar magnet?
100
the angle between geographic north and the north to which a compass needle points
What is magnetic declination?
200
the two ends of a magnet that are marked with an "S" or an "N"
What is a magnetic pole?
200
the center region of an atom
What is a nucleus?
200
a magnet made from a material that keeps its magnetism for a long time
What is a permanent magnet?
200
the circulation of molten material in Earth's core is related to Earth's ___________
What is Earth's magnetism?
200
the region of Earth's magnetic field shaped by the solar wind
What is magnetospere?
300
the area of a magnetic force around a magnet
What is a magnetic field?
300
1 a particle that carries a positive charge 2 a particle that carries a negative charge 3 a particle that does not carry any charge
What are 1 proton, 2 electron, 3 neutron
300
like a temporary magnet, a permanent magnet can also become...
What is unmagnetized?
300
these poles are located on Earth's surface where the magnetic force is strongest
What are magnetic poles?
300
between 1,000 and 25,000 km above Earth's surface are two doughnut-shaped regions called the ____________________
What are the Van Allen belts?
400
invisible lines that map out the magnetic field around a magnet
What are magnetic field lines?
400
a grouping of atoms that have their magnetic fields aligned
What is a magnetic domain?
400
true or false - magnets can be made, destroyed, or broken apart
What is true
400
since Earth produces a strong magnetic field, Earth itself can make magnets out of _______________ materials
What are ferromagnetic materials
400
a stream of electrically charged particles flowing at high speeds from the sun
What is solar wind?
500
they go out of one pole, curve around the magnet, and return to the other pole
how the magnetic field lines spread throughout a magnet
500
in a magnetized material, all or most of the magnetic domains are arranged in what direction
What is the same direction?
500
there are two magnets that each have their own north and south poles
What happens when a magnet is broken in two?
500
when the domains in an iron bar align, the bar becomes a ________
What is magnet?
500
a glowing region in the atmosphere caused by charged particles from the sun
What is an aurora?
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