Science Flashcards
Voltage
a measure of the electric potential energy and is measured in units of volts (v).
Joule
measure of the capacity to do work or generate heat
Laws of Conservation of energy
energy cannot be created nor destroyed only changed in form.
the difference between parallel circuit and series circuit? +drawing
A parallel circuit has more than one branch for electricity to flow through
series circuit only has one branch for electricity to flow through
Difference between Endothermic and exothermic + example
endo obsorbes heat
exo releases heat
energy
Ability to cause change in temperature, shape, speed or direction of an object
kinetic energy
energy from objects in motion depends on the mass and speed of an object
parallel circuit
multiple branches for electricity to flow
ohms law
voltage = current x resistance
electrodes
good conductor of electricity that usually, connects non-metals
semiconductors
it conducts sometimes but not others
resistance
the measure of how difficult it is for electrons to flow through a material
catalyst
substance that changes the rate of chemical reaction.
electric current
the steady flow of electrons through a conductor. Electric current is measured in units of amperes.
ions
an atom or molecule with a net electric charge
direct current
electric current that flows consistently in one direction
current
the rate of flow of negative charges in an electric current
battery
a device that stores chemical energy and converts it to electrical
series circuit
only 1 path for the electric current to follow
energy transformation
the change of energy from one form to another
electricity
the form of energy resulting from the existence of charged particles
transformers
device that transfers some electric energy from one current to another
alternating current
the value of the quantity and direction of the current is not constant. It changes at a regular interval
potential energy
energy that comes from position or condition
