Physics Chapter 24
Tiny pieces of iron
Tiny domains of aligned atoms
Ferromagnetic materials
Moving electric charge
None of these
Columbus
Greeks
Australian aborigines
Vikings
Pigeons, then Chinese
An electric field
A magnetic field
Both of these
None of these
Opposite the direction of the motion
In the direction of the motion
At right angles to the direction of the motion
In the direction of the field
Opposite the direction of the field
At right angles to the direction of the field
Positive ions accumulate at one end and negative ions at the other end
It atoms are aligned having plus charges on one side and negative charges on the other
The net spins of its electrons are in the same direction
Its electrons stop moving and point in the same direction
None of these
Attract
Repel also
May attract or repel
North pole
South pole
North or south pole-no difference really
North pole of a magnet
South pole of a magnet
North or south pole- no difference really
A magnetic field
An electric field
Both of these
None of these
Move around the nucleus
Spin on their axes
Both of these
None of these
Iron
Copper
Silver
All of these
None of these
Extend radially from the wire
Circle the wire in closed loops
Both of these
Neither of these
The same as the magnetic field direction
Exactly opposite tot he magnetic field direction
Perpendicular to the magnetic field direction
At an angle other than 90 degrees tot eh magnetic field direction
None of these
Poles
Mid-latitudes
Equator
The Hudson Bay region of Canada
Australia
Both of these
North pole
South pole
Both of these
A good memory
A keen sense of smell
Magnetic sensors in their heads
Ultra-high pitched sounds
None of these
At or about 50 N
Exactly 100 N
More information is needed
Relatively small
Equally huge
More information is needed
Is unaffected by the field
Is attracted to one of the poles,and repelled from the other
Is repelled by both poles, and therefore is turned back
Is deflected into the plane of the page
Accelerates straight toward the spot
By 180 degrees
Depending on where the measurement is taken
By 90 degrees
Hardly at all
None of these
Moving charges in the liquid part of the Earth's core
Great numbers of very slow moving charges in the Earth
Convection currents in the liquid part of the Earth's core
All of these
None of these
North to south
South to north
Either way
Electric field
Magnetic filed
Bother of these
None of these
Electric field
Magnetic field
Both of these
None of these
As magnetic as the original magnet
Actually stronger than the original magnet
At most half as strong as the original magnet
No longer magnetic
Exist now
May be possible in the near future
May be possible in the distant future
Are science fiction
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