Electric Force
What are atoms made up of?
protons, neutrons, electrons
explain the make up of atoms in conductors and insulators
conductors- loosely arranged to allow energy to pass through
insulators- tightly arranged to block most energy
What is static discharge?
when energy is built-up, then released
Why is a quarter a better conductor than an eraser?
A quarter is made of metal, and the loosely bound electrons can transfer charge freely. Electrons are tightly bound in rubber so charge can't easily transfer.
an atom with the same amount of protons and electrons
neutron
How can a neutral object become negatively charged?
if the object gains electrons, it will have a negative charge
What is current measured in?
Amperes (Amps)
True
What four objects can create a closed circuit to turn on a light?
Power source, switch, two wires, and a lightbulb
the force between charged particles or objects
electric force
True or False: The further apart the objects are, the weaker the magnetic force.
List two conductors
metals; copper, nickel, brass, aluminum
Give an example of static discharge
lightning, petting a cat/then shocking it
What is the purpose of electric fields?
They can cause objects to attract and repel one another.
The invisible region around a charged particle where the electric force is exerted
Electric Field
What types of forces are attracted to each other?
opposite forces
List two insulators
rubber, wood, glass,
How does a charge transfer happen?
When electrons move from one object to another or when charges build up on an object
What is voltage measured in?
Volts
the continous flow of charge
electric current
Which direction do positive forces go?
How does current flow from a battery in a closed circuit?
From the + sign with higher potential energy back to the - where there is lower potential energy
What are the four methods of charging an object?
Conduction, friction, induction, and polarization
Electric wires are often made of copper surrounded by rubber. Explain why this is a good idea.
Current moves through the copper, but it protects people who handle the wire because of the rubber.
the buildup of objects on an object
static electricity