9.1 Flashcards
what is a phenomenon
something which you can observe or sense
what happense if you rub something
you charge the object
what casues objects to be attracted or repelled against each other
objects reppel or attract because of their electric charge
how do charges work
positive charge will repel positive charge, negative will repel negative, positive will be attracted to negative
what are the three particles in an atom and what are their charges
protons-positive charge, neutrons-no charge, electrons-negative charge
why does an atom have no overall charge?
an atom has no charge because it has the same number of protons and electrons
what happeans to a polythene rod if your rub it with a cloth?
the electrons are transferred from the cloth to the rod, the rod gains an overall negative charge. the cloth loses electrons and gains an overall positive charge it does not have enough electrons to neutralise the change.
how is charge similar to energy
charge cannot be created or destroyed
defination of static
stationary or still
what are conductors and insulators
insulators hold electrons, the electrons dont move around, conductors allow electrons to move through them.
what is charge
charge is a basic effect of the way each particle is put togethar
what is electricity
movement or transfer of negative charge
what are the two ways of charging an object by contact explain them briefly
friction and conduction- u can charge objects by rubbing them(friction) u can charge objects just by touching them with other objects
