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100
The spark from a metal doorknob is an example of _______
Charging by induction
100
Electric charge is always _______
Conserved
100
Static charge builds up when _________
electrons move
100
In induction a charged object induces _______ charge in a nearby object
An opposite
100
An electric discharge is ______ of charge
A transfer
200
Where does discharge occur
Between the bottom of the cloud and the ground
200
Which best describes the charge at the top of the cloud
positive
200
What causes the lightning
The charge difference
200
what kind of charges does a cloud have
positive and negative
200
what does negative charge do for the ground
It induces the positive charge
300
if electrons out number protons the substance will be what charge
negative charge
300
how does neutral become charged
When electrons are transfered to or from it