Grade 9 Science- Static Electricity

charging by contact

process of transferring charge between objects by touching or rubbing

charging by friction

process of creating charge by the rubbing of two objects

charging by induction

process of charging an object without direct contact

discharge

to neutralize or remove all electric charges

discharge at a point

removing an electric charge by repelling electrons off the tip of a conductor

electric charge

a quantity of electricity that builds up on an object, positive or negative

conductor

A material through which charges can easily flow

insulator

A material in which electrons are not able to move easily

electrostatic series

a list of materials that have been arranged according to their ability to hold on to electrons

grounding

Is the transfer of excess charge through a conductor to Earth

electrostatics

the study of static electric charge

induced charge separation

The movement of electrons in a substance, caused by the electric field of a nearby charged object, without direct contact between the substance and the object.

law of electric charges

the law that states that like charges repel and opposite charges attract

static electricity

a charge on a substance that stays in the same place

How is lightning produced?

Electrons build up in cloud, repelling away electrons on the ground. Then, the like charges attract and the electrons use the air and moisture in the air to travel to the ground. This causes lightning.