Static Electricity Gr.9 Flashcards
__________ are the only subatomic particles that move.
Electrons
List the three subatomic particles.
Protons (positive charge)
Neutrons (neutral charge)
Electrons (negative charge)
What is static electricity?
Static electricity is a buildup of fixed electric charges without a continuous flow.
If an atom has the same number of protons and electrons, it is ________
Neutral
If an atom has more electrons than protons, it is
Negative
If an atom has less electrons than protons, it is _________
Positive
What is an insulator?
An insulator is a material that resists or blocks the movement of electrons.
What is a conductor?
A conductor is a material that allows electrons to flow freely through it.
Give 3 examples of insulators.
Air, wood, and glass.
Give 3 examples of conductors.
Copper, steel, and aluminum.
What does grounding prevent and how?
Grounding prevents electrical shock, because an object connected to the Earth can supply a very large amount of electrons to it. This removes the object’s electrons and neutralizes it.
What is an electroscope?
It is a device used for detecting the presence of an electrical charge.
Would a pith ball electroscope go towards or away from a positively charged object?
Towards.
Would a pith ball electroscope go towards or away from a negatively charged object?
Away.
When a negatively charged object touches a neutral object, the neutral object becomes ________.
Negative.
