# 7th grade chap. 6 Electricity

## 33 terms

### 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 _________.