Vocab
Unlike magnetic & unlike electric poles (attract or repel)
attract
Amperes is the unit measure of...
electric current
Magnetic fields always travel from the _________ to _______ pole
the north to south pole
Which form of electric discharge appears in nature?
Lightning
True or False: an electromagnet is a permanent magnet
The loss of static electricity as electric charges move off an object is called
static discharge
Electricity is the flow of...
electrons
Where is the force of the magnet the strongest?
The north and south pole OR the ends of a magnet
Device used to open and close an electric circuit
switch
To make an electromagnet, a conductor should be coiled around
an iron nail
Material that allow current to flow freely
Conductor
What attracts pieces of paper to balloon?
Static electricity
In a magnetized material all or most of the magnetic domains are arranged in the
same direction
You are wearing wool socks and slide your feet around on the floor. How is your body becoming charged?
friction
What three things can you change on an electromagnet?
strength, polarity, and turn off/on
Which particle of an atom is responsible for a materials magnetic properties?
electrons
An electric current will always follow the path
The path of least resistance
Cluster of billions of atoms that have all the magnetic fields lined up
Magnetic Domain
These two things would strengthen the magnetic field
The size and distance
What type of material does not allow electric current to flow?
insulator
Streams of electricity charged particles flowing at high speeds from the sun make the
Solar Winds
An electrostatic force occurs when...
there is an imbalance between protons and electrons
Which metals can be temporarily magnetized?
Iron, Nickel, and Cobalt
Why does a compass point north?
the magnetized compass needle algins itself with the Earth's magnetic field
Atoms have no electric charge when they
have an equal number of electrons and protons