Transcript Electricity - PoeScience

S8P5b. demonstrate the
advantages and disadvantages of
series and parallel circuits and
how they transfer energy.
EQ: How might life be different if
electricity was never discovered?
 Two
types of electric charge (electrons,
ions)
 Electrons move through solids
 Ions move through solutions
 The transfer of electrons between objects
is called static charge
 All
objects exert an electric force on each
other. Can be attractive or repulsive like a
magnet.
 Electric fields exist around every electric
charge. Gets stronger the closer you get to the
charge. Gets weaker the further away.
 Conductors are materials that electrons can
move more easily through (metals such as iron,
lead, gold, silver, copper)
 Insulators are materials that electrons cannot
move easily from place to place such as
rubber.
Current of electricity is the flow of electric
charge (electrons or ions, mainly electrons)
 A circuit is a closed loop in which electric charge
flows continuously. It has three parts: a source of
electric charge-battery ,a conductor-wire which
is connected to the battery, and a receiver such
as a light bulb.
 Voltage is the measurement of how much electrical
potential energy an electron can have. Ohm’s Law
states Voltage = current X resistance or V=IR

 Why
do batteries die?
 Batteries (Teacher Explanation)
Batteries supply energy to a circuit
 In
a circuit, electric charge flows out of the
negative end of the battery toward the positive
end.
 Resistance is the measure of how difficult it is
for electrons to flow through a material.
 Two
types of circuits-series and parallel.
 Series Circuit only has one path for
electric current to flow. If the path is
broken, current will stop flowing.
 Parallel Circuits has more than one path
for electric current to flow. If one path is
broken, electrons continue to flow down
other paths.
 Conductor-substance
that easily allows
electrons to flow. (All metal wires)
 Insulator-Substance that doesn’t allow
electrons to flow easily. (wood, rubber)
 After
learning about series and parallel
circuits, think of advantages and
disadvantages of each.