Magnetic Mayhem
What happens when like poles are brought together
They repel
What is the law of conservation of energy?
What is conduction?
Heat transfer due to direct contact between two objects
What is Energy?
The ability to do work or cause change
What is magnetism?
A non-contact force that pushes or pull an object without touching it
What are magnetic domains?
regions within a magnet where atoms are aligned to make the material magnetized
Explain why a sock may stick to other clothes when it comes out of the dryer?
Friction causes the transfer of electrons (negative charge) between the clothes so that they then stick to positive material
What is electric current?
The rate at which electricity flows
What Radiation?
Heat transfer though electromagnetic waves
What is Mechanical Energy?
The total energy of a system due to its position and motion
What kind of force is a magnet?
Non- contact force
What are the types of charges atoms can have
positive, negative, or neutral
What does AC and DC mean?
Alternating Current- changes voltage
Direct Current-constant
What is convection?
Heat transfer through fluids such as gas or liquids ex: air conditioning
What is voltage measured in?
Volts (V)
Where are magnetic fields the strongest
Where the lines are closest together; the poles
What is Induction?
The process of moving electric charges within an object without touching it
What is the difference between a closed and open circuit?
Closed circuit is where energy can flow through completely. Open is when there is a break in the wire and electricity cannot flow through.
Which form of heat transfer is happening when water boils
convection
What happens to magnetic poles if a magnet is split in half?
The 2 new magnets still have a north and south pole
Which 2 factors increase magnetic potential energy?
2. Distance of magnets
Explain the difference between a conductor and an insulator with examples.
Conductors allow for easy flow of heat or electricity. Insulators resist the flow of heat or electricity.
How can you increase an electromagnet's strength
- increase number of coils
-increase voltage
-use a stronger conductor
Describe the energy transfer of using a blender
electrical to mechanical to chemical
Explain what happens to an electromagnet is electricity stops flowing?
Without electricity there would be no magnetic field to act on objects