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33 terms

7th grade chap. 6 Electricity

STUDY
PLAY
repel
Like electric charges ________each other.
current
The severity of an electric shock depends on the amount of __________.
decreases
The strength of the electric field of a charged particle becomes greater as the distance from the particle ____________.
law of conservaton of charge
The _________________________ states that charges is are not created or destroyed.
electric force
The attraction or repulsion between electrical charges is called _________________.
voltage sources
Batteries and generators are examples of ______________, which create a potential difference in a circuit.
ammeter
To measure the current through a device in an electric circuit, an ________ should be connected in series with the device.
current
The continuous flow of charges through a material is electric________.
energy
In a flashlight, the battery is a source of electrical ________.
attract
As in the case of unlike magnetic poles, unlike electric charges ______ each other.
static electricity
The buildup of electric charges on an object is called _________.
friction
Clothes in a dryer acquire static cling by ________.
static discharge
The loss of static electricity as electric charges move off an object is called ________________.
neutral
Suppose you acquire a positive charge from walking across a carpet. You then touch a doorknob and receive a shock. This leaves you electrically __________.
voltage
__________ causes charge to move in a circuit.
of the least resistance
An electric current will always follow the path______________________.
dimmer
In a series circuit with three bulbs, adding another bulb will make all the bulbs _________.
its own path
In a parallel circuit with three bulbs, current from each bulb has ______________.
voltmeter
a device used to measure electrical potential energy difference, or voltage, is called a __________.
short circuit
A connection that allows current to take the path of least resistance is called a ________________.
you cannot use it again
One disadvantage of using fuses when a fuse burns out, __________________.
cause burns and stop your heart
A current of greater than 0.2 amps could ___________________________.
positive
The charge on a proton is _________, and the charge on an electron is negative.
negative
The charge on a proton is positive, and the charge on an electron is __________.
electroscope
An instrument that can detect the presence of an electric charge is and ______________.
voltage source
A device that creates a potential difference in an electric circuit is a _________________.
electric circuit
A complete, unbroken path through which electric charges can flow is an _________________.
conductors
Materials that allow the charges of an electric current to move freely through them are called ____________.
rubber
An example of an unsulator is ____________.
switch
A device that used to open and close an electric circuit is a ___________.
electric current
The ampere is a unit of ____________.
electrochemical cell
A device that transforms stored chemical energy into electrical energy is and _________________.
terminals
The parts of the cell that are used to connect an electrochemical cell to a circuit are the _________.