Physics-Motion Flashcards
(34 cards)
Distance
The length of space between two points
Speed
the rate at which someone or something moves or operates or is able to move or operate.
Time
the indefinite continued progress of existence and events in the past, present, and future regarded as a whole.
Distance-Time Graph
A distance-time graph shows how far an object has travelled in a given time.
Magnet
A piece of metal that attracts other materials.
Magnetic Material
Materials that are attracted to magnets eg. iron, cobalt, nickel.
Alloy
A mixture of two metals , steel contains iron and cobalt.
Poles
Two opposite ends of a magnet at which the magnetic field is at its strongest.
Magnetic Field
The space around a magnet that exerts a force on magnets and magnetic materials.
Magnetic field lines
The directions of forces in a magnetic field are represented by magnetic field lines.
Compass
A small magnet allowed to move freely on a pivot. The direction the compass needle points is the direction of the magnetic field lines.
Current Electricity
The steady flow of charge though wires and circuits.
Static electricity
When two objects come into contact, electrons can transfer between them. When this happens, both objects become charged with static electricity.
Charged particles
The steady flow of charge though wires and circuits.
Conductor
Conductor A substance that allows energy, such as heat or electricity, to pass through it easily.
Insulator
A substance that does not allow energy, such as heat or electricity, to pass through it easily.
Negative
Electrons have a negative charge. If an object gains electrons, it becomes negatively charged.
Positive
An object that has lost electrons takes on a positive charge.
Components
Objects in an electric circuit. The conversion of electrical energy into other forms takes place when that energy passes through these objects.
Circuit diagram
An electronic circuit drawn using symbols.
Current
The steady flow of charge though wires and circuits.
Ammeter
Measures the current flowing through a wire. Ammeters are connected in series.
Potential difference
When there is a point of high electrical energy and a point of low electrical energy in a complete circuit, we say that there is a difference in electrical potential energy between those points. Provides the energy that pushes electrons around a circuit. It is needed to make a current flow.
Voltage
Potential difference in a circuit is also called voltage.
