Mag. Materials
What is iron
These are needed to make an electromagnet (3 items)
Battery, wire, iron nail
These are called magnets
Any object with a N and S pole
This is the iron rule
Opposite poles attract, like poles repel
This surrounds all magnetics
What are magnetic fields
List a number of house hold materials that people often think are magnetic but are not (you must get at least 3 correct)
Metals such as;
copper, aluminum, brass, pennies, nickels, dimes, quarters, keys, knifes, forks, spoons
This is the concept that explains how the electromagnet works
Aligned Domains
These are called magnetic sometimes
What are temporary magnets
These are the poles that repel
N and N or S and S
This can cause a magnet to lose its magnetism
Hammering it or hitting it.
These are groups of electrons with the same spin and orientation
What are domains
This is 2 ways that an electromagnet is better than a permanent magnet
1) On/Off
2) Stronger
3) Change polarity
This describes the domains inside a permanent magnet
What is always aligned
This attracts to magnetic north of the earth
What is the S pole
These are the units used to measure magnetic fields
What are Teslas.
These are naturally occuring magnets
What are loadstones
This is where electromagnets are used. Must have one from this list.
Schools/doors
Phones/Speakers
Junkyards/Car cranes
Motors/Armatures
This describes what happens when a magnet is broken into two halves
What are two magnets
This is the types of metal that contains domains that can be lined up with a magnet
The Earth's core is made of this and it is responsible for making the Earth's magnetic field.
Iron
This is another name for materials that will attract to a magnet
Ferromagnetic materials
This is the principle that explains electromagnetism
Moving electric charges make magnetic fields
These are the steps to make a paperclip stick to a magnet
1) Hold the magnet near the paperclip
2) align the domains inside the paperclip
3) The paperclip is now a magnet
4) The paperclip now attracts to the magnet
Iron is in magnetic tape on credit cards so that this can be done
Personal information is stored in the domains of the magnetic tape such as 0 and 1s (binary code) or Up or Down spin domains.
Magnets are used on this type of transportation so that it floats on a magnetic field with no friction
What are Mag. Lev. trains