Objectives N.2.1.1. Explain how electric charges interact.
N.2.1.2. Explain what an electric field is. N.2.1.3. Describe how
static electricity builds up and transfers.
Slide 3
Electric Charge Charges that are the same repel each other and
charges that are different attract each other. N.2.1.1. Sound
familiar? Magnetic poles follow the same rules.
Slide 4
Electric Force Electric Force is the attraction of repulsion
between electrically charges particles. An electric field is the
region around a charges particle where electric force is exerted on
other charged particles. Objective N.2.1.2. Sound familiar? Just
like magnetic fields!!!
Slide 5
Electric Fields Around Single Charges The electric field from a
positive charge point outward while the electric field from a
negative charge points inward.
Slide 6
Electric Fields Around Multiple Charges When two charges are
brought close to each other, their electric fields are
combined.
Slide 7
Combined Electric Fields OppositeLikes
Slide 8
Combined Electric Fields: Cool Picture
Slide 9
Static Electricity Static means not moving so, in static
electricity charges build up on an object but they do not flow.
Objective N.2.1.3.
Slide 10
Transferring Charge There are three methods for transferring
charge from on object to another: Friction Conduction
Induction
Slide 11
Friction Friction is the transfer of electrons by rubbing
objects together.
Slide 12
Conduction Conduction is the transfer of electrons by two
objects touching. Sound familiar? Heat can also be transferred by
conduction.
Slide 13
Induction When a charged object is brought close to another
object, the charges separate by induction. The objects dont need to
touch.
Slide 14
Static Discharge When a negatively charged object and a
positively charged object are brought close together, electrons may
transfer until both objects have the same charge again. Objective
N.2.1.3.
Slide 15
Lightning
Slide 16
Lightning is the most dramatic natural form of static
discharge. Trillions upon trillions of electrons suddenly jump from
the cloud base to the ground.