Magnetism. Flashcards
How do you demagnetize a magnet?
- Heating
- Dropping
- Other strong impacts
What is a magnet?
A magnet is a material that attracts iron or has materials that can attract iron.
What is the mineral in rocks that is magnetic?
Magnetite
Where is the magnetic force of a magnet strongest?
On the poles – where the magnetic field lines are closest
What is the name for a negatively charged particle?
Electron
Every million years or so earths magnetic fields ________ ___________
Reverses direction
What is the name of the term where domains line up in the same direction?
Magnetic domains
Will this term repel or attract?
To south poles are brought near each other
Repel
Will this term repel or attract?
A north pole is brought near a South Pole
Attract
Will this term repel or attract?
Two North Poles are brought near each other
Repel
Will this term repel or attract?
The south pole is brought near a North Pole
Attract
The region of a magnetic force or on a magnet is known as it’s _______ _______
Magnetic Field
What are the lines called that map out the magnetic field around the magnet
Magnetic field lines
True or false
Magnetic field lines always overlap
False
magnetic filed lines never overlap
When the magnetic fields of two or more magnets overlap what is the results?
Combined field
True or false
All magnets are not made of pure iron
True
Earth itself can make magnets out of ___________ material
Ferromagnetic
True or False
Magnetic materials are strongest at the polls. The closer the lines the stronger the magnetic field
True
What is the definition of ferrimagnetic
The material that show strong magnetic properties
What is the definition of the magnetosphere?
A region of earths magnetic fields shaped by solar winds
What is definition of an Aurora
Glenn region the arts atmosphere caused by charged particles from the sun.
True or false
Do magnetic determination of a location never changes
False
it depends on your location
