Science Unit three vocabulary Flashcards
Has domains. Creates a field. has a north and south pole. Can attract repel or have no effect on other materials. Attracts ferromagnetic materials.
Magnet
Parts of a magnet. North and South. Strongest at this part but weakest at center.
Magnetic poles
Ability of a material to respond to and exert a ____
magnetic force
field created by an electromagnet.
electromagnetic field
Negative node of a battery
Anode
positive part of a battery
Cathode
A common type of rock material or iron ore that is naturally magnetic.
Magnetite
the shape of a magnetic field. Used to show the strength and the placement of the magnetic field.
Magnetic Field Lines
Only Iron, Nickel, and cobalt have these. They are groups of atoms that act like magnets. Poles of atoms are aligned in the same direction. region in which the magnetic fields of atoms are grouped together and aligned.
Domains
consists of a solenoid (coil of wire) wrapped around a bar of iron or other ferromagnetic material.
electromagnet
the simplest form. It includes a battery and a wire. No added components to reduce the flow of electrons.
short circuit
Caused by electrostatic difference in the circuit. Difference between charge of negative and positive nodes. Speed of flow of electrons.
Voltage
The measure of speed of flow of electrons or voltage.
volts
consisting of a solenoid around a ferromagnetic object. Has domains aligned for a period of time, but not permanently.
Temporary Magnet
Multiple theories. The geographic north is the magnetic south. The geographic South is the magnetic north.extends from Earth’s interior out into space. Controls radiation from the sun.
Earth’s Magnetic field
A circuit that doesn’t work and is missing something.
Open Circuit
A complete circuit with all of its components and it is working.
Closed Circuit
the interaction of electric currents or fields and magnetic fields.
Electromagnetism
type of electromagnet formed by a helical coil of wire whose length is substantially greater than its diameter, which generates a controlled magnetic field. The coil can produce a uniform magnetic field in a volume of space when an electric current is passed through it. Converts Electrical into magnetic energy
solenoid
an electrical machine that converts electrical energy into mechanical energy. operate through the interaction between the motor’s magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor’s shaft
device that transforms electrical energy into mechanical energy.
Uses electromagnetism to do this!
When an electric current travels through the wires, an electromagnet is created.
This electromagnet will either have a North or South pole.
It then interacts (attracts/repels) with the permanent magnets on the outside, which causes the axle to rotate.
electric motor
is the winding of an electric machine which carries alternating current. converts from electrical energy into mechanical energy
armature
number or amount of electrons flowing through a circuit.
measured in amps or amperes can be changed by adding or removing batteries uses galvanometer to measure this
current
Amperes. used to measure current
amps
No source of electricity. process of converting mechanical energy into electrical energy. By moving magnet near wire to create current.
electromagnetic induction
