atoms
matter made up from particles
three parts of a atom
electrons, neutrons, protons
electrons
negative charge
protons
positive charge
neutrons
no charge
objects can gain/lose electrons through ___ or rubbing two things together
friction
electrically charged
objects gain or lose electrons
repel each other
2 negatively charged/2 positively charged objects
attract each other
negatively charged object and a positively charged object
static electricity
electricity that builds up until it cannot be discharged but is not in a circuit
ohms law
relationship between voltage, current, and resistance
current
the current amount of flow of electrons
voltage
the force that pushes electrons through a circuit
resistance
the opposition to the flow of electrons. the level of difficulty fot yhr electrons to flow through the circuit.
series circuit
a circuit with only one pathway
parallel circuit
a circuit with more than one pathway
static electricity
electrically charged, extra electricity will be discharged and it would return to neutral. static is not often useful, but more dangerous. created by friction/rubbing, and gains electrons.
static and current
static is built up and not flowing, and current is flowing like a river.
Conducter
Material that allows electricity to flow easily. Metal, water, and wool.
Insulator
Material that does not allow electrons to flow easily. Rubber, glass, ceramic.
DC
Direct Current, Batteries
AC
Alternation Current, Outlet
Circuit Breaker
a switch connected into a circuit. The switch shuts off automatically if it senses an overload.
Fuse
A thin wire inside a capsule which is connected to a circuit. The thin wire melts if it overloads.
battery
the power supply for circuits. battery is a device that stores chemical energy, and converts it to electricity. has DC
current
the amount of flow of the electrons. symbol is I, unit is amps and symbol for amps is A.
components of atom
protons, neutrons, electrons, and nucleus.
nucleus
located in the middle of the atom where the protons are.
electrons in an atom
orbiting the atom.