Science Flashcards
sciene deck
Difference between parallel circuit and series circuit
A series circuit only has 1 path to flow while a parallel circuit has more than one path to flow
Difference between endothermic and exothermic
Exothermic releases heat causing the temperature of the surroundings to rise while the endothermic process absorbs heat and cools the surroundings
Energy
Energy is the ability to cause change- it can change the temperature, shape, speed, or direction of an object
Ohm’s law
Voltage= current x resistance
Joule
measure of the capacity to work/generate heat
Parallel circuit
A parallel circuit is a circuit that has more than one path for the electric current to follow
Voltage
The pressure that pushes electricity
Electrodes
an electrical conductor that carries electric current to the nonmetallic circuit parts of a circuit
Series Circuit
A series circuit has only one path for the electric current to follow
Energy Transformation
The process of changing energy from one form to another
Electricity
The form of energy resulting from the existence of charged current - rate of flow of negative charges in an electric current
Transformers
A device that transfers some electric energy from one circuit to another
Alternating Current
an electric current that reverses its direction many times a second at regular intervals
Semiconductors
It conducts sometimes not others
Resistance
The measure of how difficult it is for electrons to flow through a material
Catalyst
A substance that changes the rate of chemical reaction
Kinetic Energy
Kinetic Energy is energy from objects in motion and depends on the masses and speed of an object. The higher the speed and or mass the more kinetic energy.
Electric Current
The flow of electricity in an electronic circuit, and to the amount of electricity flowing through a circuit
Ions
An atom or molecule with a net electrical charge
Direct Current
The electric current that flows consistently in one direction
Current
The rate at which electrons flow past a point in a complete electrical circuit
Battery
An electric battery is a source of electric power consisting of one or more electrochemical cells with external connections for powering electrical devices
Law of Conservation of Energy
energy can neither be created nor be destroyed
Potential energy
the stored energy in an object due to its position, properties, and forces acting on it
Conductors
Allow electrons to move through them more easily, the best conductors are metals such as copper, silver and iron
Watts
Unit of power measuring electric flow
Circuit
A circuit is a closed path through which an electric current can flow
Insulators
A material in which electrons cannot move easily from place to place
Power
The rate at which energy is transferred by a circuit
