NON CONTACT FORCES VOCAB Flashcards
(19 cards)
Force
Any of the various factors that cause a body to change its speed, direction or shape.
Force Field
A region or space in which a given effect exists.
Net Force
A single force whose external effects on a rigid body are the same as the effects of several actual forces acting on the body.
Non Contact Force
Forces that act between two objects that are NOT physically touching each other.
Atom
The smallest unit of a chemical element. An atom consists of a dense central nucleus composed of protons and neutrons, surrounded by a cloud of rapidly orbiting electrons.
Electron
A stable subatomic particle with a negative electric charge that is opposite to that of a proton but is equal in magnitude.
Neutrons
An electrically neutral or no charge subatomic particle that has a mass slightly greater than that of a portion and is part of every atomic nucleus.
Protons
A stable subatomic particle that is part of the nucleus of an atom and has a positive electric charge. Its charge is opposite to that of an electron but is equal in magnitude. The amount of protons depends on the individual element.
Static Electricity
Electric charge that accumulates on an object rather than flowing through it as a current.
Magnetic Domain
A region composed of a group of atoms whose magnetic fields are aligned in the same direction.
Permanent Magnetic
A magnet that retains its magnetism after removal of the magnetizing force.
Pole
Either of two areas of a magnet where the magnetic field is the strongest. The North and South Poles are the strongest.
Insulator
A material of such low conductivity that the flow of current through it is negligible.
Conductor
A substance, body, or device that readily conducts heat, electricity, etc.
Electric Motor
An electric motor is a device for converting electrical energy into mechanical energy in the form of rotation.
Electromagnet
A device that consists of a coil of insulated wire wrapped around an iron core that becomes magnetized when an electric current flows through the wires.
Generator
A device that converts motion into electrical energy. A generator contains a coil of wire that rotates within a magnetic field , producing an electric current in the wire.
Solenoid
A coil of wire that acts as a magnet when an electric current passes through it.
Transformer
A device used to change the voltage of an alternating current in one circuit to a different voltage in a second circuit. A transformer consists of a frame of an easily magnetized material with two coils of wire wound around it. Each coil is connected to one of the two circuits.
