Static Charge Exam ALREADY PASSED
What does static charge mean?-/=Static charge refers to electric charge that can be held in one
place (aka static electricity)
What are examples of static electricity?-/=A lightning strike
Dusters that attract dust
Crackles when combing hair
Plastic wrap sticking to your hands
Dust being attracted to television screens
Clothes clinging to each other in a dryer
Getting a shock after rubbing your feet on a carpet and then touching a metal object
Where does static charge come from?-/=All materials are made of atoms, which contain electric
charges
There are electrons around the atom, which are negative
There are protons in the centre of an atom, which are positive
An atom has an equal amounts of positive and negative charges, so the atom had no overall
charge
__Electrons do not always stay attached to atoms and can sometimes be removed by rubbing__
How does static charge build up?-/=It can build up when two insulating materials are rubbed
together, such as a plastic comb moving through hair
What causes electrons to be transferred from one material to another?-/=Friction
When you rub two insulators together, what happens to the charges of the two insulators?-/=One
material ends up with more electrons, so it has an overall negative charge
One material ends up with fewer electrons, so it has an overall positive charge
What are electrical insulators?-/=Materials that do not allow charges to move easily
What happens if you rub a neutral plastic rod with a paper towel?-/=The end of the plastic rod
that was rubbed would become charged and the other end would remain neutral, meaning the
plastic rod is an electrical insulator (the charges on one end did not transfer to the other end
What does static charge mean?-/=Static charge refers to electric charge that can be held in one
place (aka static electricity)
What are examples of static electricity?-/=A lightning strike
Dusters that attract dust
Crackles when combing hair
Plastic wrap sticking to your hands
Dust being attracted to television screens
Clothes clinging to each other in a dryer
Getting a shock after rubbing your feet on a carpet and then touching a metal object
Where does static charge come from?-/=All materials are made of atoms, which contain electric
charges
There are electrons around the atom, which are negative
There are protons in the centre of an atom, which are positive
An atom has an equal amounts of positive and negative charges, so the atom had no overall
charge
__Electrons do not always stay attached to atoms and can sometimes be removed by rubbing__
How does static charge build up?-/=It can build up when two insulating materials are rubbed
together, such as a plastic comb moving through hair
What causes electrons to be transferred from one material to another?-/=Friction
When you rub two insulators together, what happens to the charges of the two insulators?-/=One
material ends up with more electrons, so it has an overall negative charge
One material ends up with fewer electrons, so it has an overall positive charge
What are electrical insulators?-/=Materials that do not allow charges to move easily
What happens if you rub a neutral plastic rod with a paper towel?-/=The end of the plastic rod
that was rubbed would become charged and the other end would remain neutral, meaning the
plastic rod is an electrical insulator (the charges on one end did not transfer to the other end
