Magnetic Attraction
What happens when two magnets with opposite poles are brought close together?
They attract each other.
What do magnetic field lines represent?
They represent the direction of magnetic forces around a magnet.
Name a material that is considered ferromagnetic.
Iron Nickle, cobalt
What is a magnetic domain?
small region where the magnetic fields of atoms are aligned.
What does a magnetic field look like?
It is represented by lines that show the direction and strength of magnetic forces.
What happens when two magnets with the same poles face each other?
They repel each other.
What is the rule for drawing magnetic field lines around a magnet?
They go from the north pole to the south pole.
What property do ferromagnetic materials possess?
They can be magnetized and retain their magnetism.
How can changing the temperature affect magnetic domains?
Heating can cause them to become misaligned and lose magnetism.
What is a key characteristic of a magnetic field?
It has both a direction and strength.
Explain how a magnetic repulsion can be observed in two bar magnets.
When the north pole of one magnet is brought close to the north pole of another, they push away from each other.
How do magnetic field lines behave near the poles of a magnet?
They are denser and closer together, indicating a stronger field.
Why are some metals like aluminum not ferromagnetic?
They do not have magnetic domains
What happens to the magnetic domains when a magnet is created?
The domains align in the direction of the magnetic field.
How does distance from a magnet affect the strength of its magnetic field?
The strength decreases as you move farther away from the magnet.
Name a common object that can be attracted by a magnet
A paperclip
What happens to magnetic field lines if you break a magnet in half?
New field lines form, creating two magnets each with a north and south pole.
What happens to ferromagnetic materials when they are heated?
They can lose their magnetism.
How does an external magnetic field affect magnetic domains?
It can cause them to align and strengthen the overall magnetism.
What does the density of magnetic field lines indicate?
The closer the lines are, the stronger the magnetic field.
Describe what happens when a magnet is cut in half.
Each half becomes a new magnet with its own north and south pole.
Describe how you would visualize the magnetic field around a bar magnet.
By using iron filings, you can see the pattern of the lines around the magnet.
How do ferromagnetic materials relate to magnetic domains?
They contain regions where magnetic fields of atoms are aligned in the same direction.
Explain how the process of magnetization relates to magnetic domains.
Magnetization involves aligning the magnetic domains in the same direction to create a stronger magnet.
Explain how earth's magnetic field protects us.
It deflects solar wind and cosmic radiation, protecting the planet from harmful particles.