Magnetism
Magnets are any material that attracts ____
Iron
magnetic poles that have like ends ____
repel
magnetic field lines map out the invisible field around a _____
magnet
Without _____ there would be no electricity
magnetism
has a magnet on a needle that spins freely is a
compass
list the 3 properties of magnets
Attracts iron
Attracts or repels other magnets
One end will always point north when allowed to spin freely
Magnetism creates a(n) ________ between substances
attraction
magnetic field lines are close together where it is the _______
strongest
moving magnets create ______
electricity
Magnetism is used in... List 3 daily uses
TV
Speakers
Refrigerator seal
MRI
Airpods
Store Data in computers
magnetism- is the ____ of magnetic materials caused by lined up spinning ____
attraction/electrons
all magnets have _____ ends which are called____ ____
two/magnetic poles
magnetic fields cause _____ to interact without even touching
magnets
magnetism is used in a compass for ______
navigation
animals use the earth's magnetism to ____
migrate
magnetite is a rock discovered by the ____
Greeks
magnetism came from the ____ or _____ of electrons from an atom
push or pull
The arrows on the magnetic field lines always go from _____ to _____
north to south
are the geographic and magnetic poles in the same place? How do we know?
No, because the magnetic poles change but the geographic poles always stays the same
The earth's magnetic poles are different than the _____ poles
geographic
Magnets contain the mineral _______ (Fe2O4) also known as ferromagnetic
Magnetite
____ ______ magnets can be made of a combination of metals made to align their atoms in the same direction
man-made
If the magnetic field line arrows are going from left to right, what does that tell you about the poles on the magnet
it tells you that the north pole is on the left and the south pole is on the right
The attraction or repulsion between magnetic poles is a _______ _______
magnetic field
the angle that is the difference between the actual and magnetic poles of the Earth
Magnetic declination