science chapter 19 Flashcards
When lightning strikes, some of the energy releases…(3 main things)
the lightning bolt we see, the sound of thunder, and the thermal energy around the bolt
The amount of positive protons and negative electrons are always
equal to one another
Oppositely charged particles (protons and electrons) are…
attracted to one another like a magnet
Any object can become ___________ ________, making it an ___.
electrically charged, ion
Different materials carry electrons more…
loosely than others
objects become unbalanced when?
objects loose electrons, causing these electrons to bounce around to other objects. (electrons must = protons)
An unbalanced negative or positive electric charge on an object is sometimes referred to as a?
static charge
the region surrounding a charged object that applies an electric force to other charged objects around it (can attract or repel other charged objects)
electric field
The strength of the electric force relies on the total amount of…(2 things)
charge on both objects and the distance between the objects.
The Strength of an electric field increases as the…
total amount of charge of the two objects increases
A stronger electric field applies a…
stronger electric force to other objects.
The strength of an electric field increases as the…
distance between the two objects decreases.
A material in which electrons cannot easily move
electric insulator
A material in which electrons can easily move
electric conductor
When objects made of different materials touch, electrons tend to collect on the object that holds electrons tighter. This is known as…
transferring charge by contact
Insulators and Conductors can be…
charged by contact
a process by which one object causes two other objects that are conductors to become charged without touching them
Transferring charge by induction
When electrons concentrate at one end of an object, the object is…
polarized
When conducting objects with unequal charges touch, electrons flow from the object with a _______ _____________ __ ________ _______ to the object with a _____ ___________ __ ________ ______.
greater concentration of negative charge, lower concentration of negative charge
The process of an unbalanced electric charge becoming balanced (can occur slowly or quickly)
electric discharge
Providing a path for electric charges to flow safely into the ground
grounding
How many people die from lightning each year?
2000