Static Electricity

a neutral metal sphere is touched by a negatively-charged metal rod. during the process, electrons are transferred from the ____________ to the __________ and the sphere acquires a __________ charge.

charged rod, neutral sphere, negative

a neutral sphere is touched by a negatively-charged metal rod. as a result, the sphere will become charged by ____.

conduction

a negatively-charged metal sphere is touched by a person standing on the ground. The metal sphere subsequently becomes neutral. the metal sphere becomes neutral during this process because _______________.

electron pass from the sphere to the person (ground)

a positively-charged Van de Graaff generator is touched by a daring student. a spark of lightning is seen as ___________.

electrons flow from the student towards the Van de Graaff generator

substances through which charges have difficulty moving are called ________.

insulators

_________ are charged parts of an atom

protons and electrons

a physics student, standing on the ground, touches an uncharged plastic baseball bat to a negatively charged electroscope. this will cause _________.

absolutely nothing (or very little) to happen since the plastic bat does not conduct

Electrical forces ____.

can cause objects to attract or repel each other

a positively-charged metal sphere is touched by a person standing on the ground. the metal sphere subsequently becomes neutral. the metal sphere becomes neutral during this process because _________.

electrons pass from the person (ground) to the sphere

The best explanation for how a positively-charged object can become grounded is that the object ____________.

gains electrons from another object

a charged metal sphere is touched by a person standing on the ground. the metal sphere subsequently becomes neutral. this process is known as________.

grounding

a neutral object can become positively charged by________.

losing electrons

a metal sphere is electrically neutral. it is touched by a positively-charged metal rod. as a result, the metal sphere becomes charged positively. this occurs because the metal sphere _____________.

lost electrons to the rod

an atom that is negatively charged contains_________.

more electrons than protons

what is located inside the nucleus of an atom?

neutrons, protons

___________ are negatively charged

only electrons

protons cannot be gained nor lost because ______.

they are tightly bounded in the nucleus