Opposite Poles attract each other.
So a north & south pole or a south & north pole.
Like Poles repel each other. So a north pole & another north pole or a south pole & another south pole.
Magnets are attracted to iron, copper, and certain other metals.
Electromagnets
What are they?
A coil of wire wrapped around a metal core, such as an iron bar or nail
What makes them stronger?
The properties of the core (how big it is, what material it is made of)
The size of the energy source or battery
How many coils of wire you wrap around the core, also how tightly wrapped the coils are
What happens when the electricity stops flowing?
When the electricity stops flowing in an electromagnet, it stops being magnetic.
Vocabulary Review
repel-to push away
attract-to pull toward
poles-the parts of a magnet where the magnetic force is the strongest
magnetism-the area of magnetic force around a magnet
magnet-any object with magnetic force
electromagnet-A coil of wire wrapped around a metal core, such as an iron bar or nail
compass-an instrument that uses the Earth's magnetic field to help people find directions
Did you Know???
Much of the inside of Earth is made of melted iron which creates a magnetic field that surrounds our planet. Pretty cool!!
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