types of magnets
how many main types of magnets are there
how many poles does a magnet have
2
do magnets have to be made out of metal?
NO they do not, the just have to have unpaired electrons.
were is a magnetic field the strongest on a magnet
the poles
can you turn an electromagnet on and off
yes of course you can
because it requires electricity so you can switch it on and off
magnet that requires electricity
electromagnet
what happens when you break a magnet
it turns in to more magnet each with an north and south pole
how do electromagnets work
the electricity flowing throw a coiled wire makes an magnetic field.
can you kill a magnets magnetism
yes
by heating it up or hitting it with and hard object
how much does the average cloud weigh (in pounds)
1.1 million pounds
what is the most common magnet
fridge magnet (or ceramic)
what is the strength of a fridge magnet
A typical fridge magnet has a magnetic strength of about 0.001 Tesla or 10 to 100 Gauss
what animal do magnets repel
sharks
they disrupt the sharks sensory organs.
how are magnets made in nature
when lightning strikes magnetite
what is the speed of sound
767 mph
Samarium Cobalt
what is the strength of the Earth's magnetic field (in Gauss)
0.25 to 0.67 Gauss
how long do magnets retain the magnetism
thousands of years losing 1% to 5% of there magnetism every 100 years
are the poles fixed on the earth
no they drift
what is the speed of light
671 million mph
strongest type of rare earth magnets
Neodymium magnets
what are the 2 names of measurements of magnetic fields
Gauss and Tesla
bonus fact 1 Tesla is equal to 10000 Gauss
when where magnets discovered
600 BC
how many metals are naturally magnetic
3
iron, nickel and cobalt
how many Neurons does the average human have
86 billion