Science Chapter 6: Electricity

Question 0

Electric current

Answer 0

The region around a charged object where the object’s electric force is exerted on other charged objects.

Question 1

Electric force

Answer 1

The force between charged objects.

Question 2

Static Electricity

Answer 2

A buildup of charges on an object.

Question 3

Conversation of change

Answer 3

The law that states that charges are neither created nor destroyed.

Question 4

Friction

Answer 4

1. The force that two surfaces exert on each other when they rub against each other. 2. The transfer of electrons from one uncharged object to another uncharged object by rubbing.

Question 5

Conduction

Answer 5

1. The transfer of thermal energy from one particle of matter to another. 2. A method of charging an object by allowing electrons to flow from one object to another object through direct contact.

Question 6

Induction

Answer 6

A method of redistributing the charge on an object by means of the electric field of another object; the objects have no direct contact.

Question 7

Polarization

Answer 7

The process through which electrons are attracted to or repelled by an external electric field, causing the electrons to move within their own atoms.

Question 8

Static Discharge

Answer 8

The loss of static electricity as electric charges transfer from one object to another.

Question 9

Electric current

Answer 9

The continuous flow of electric charges through a material.

Question 10

Electric circuit

Answer 10

A complete, unbroken path through which electric charges can flow.

Question 11

Conductor

Answer 11

1. A material that conducts heat well. 2. A material that allows electric charges to flow.

Question 12

Insulator

Answer 12

1. A material that does not conduct heat well. 2. A material that does not easily allow electric charges to flow

Question 13

Voltage

Answer 13

The difference in electrical potential energy per charge between two places in a circuit.

Question 14

Resistance

Answer 14

The measurement of how difficult it is for charges to flow through an object.

Question 15

Ohm’s law

Answer 15

The law that states that resistance in a circuit is equal to voltage divided by current.

Question 16

Series circuit

Answer 16

An electric circuit in which all parts are connected one after another along one path.

Question 17

Parallel Circuits

Answer 17

An electric circuit in which different parts of the circuit are on separate branches

Question 18

Power

Answer 18

The rate at which one form of energy is transformed into another.

Question 19

Short circuit

Answer 19

A connection that allows current to take the path of least resistance

Question 20

Third prong

Answer 20

The round prong of a plug that connects any metal pieces in an appliance to the safety grounding wire of a building.

Question 21

Grounded

Answer 21

Allowing charges to flow directly from the circuit into the building’s ground wire and then into Earth in the event of a short circuit.

Question 22

Fuse

Answer 22

A safety device with a thin metal strip that will melt if too much current passes through a circuit.

Question 23

Circuit breaker

Answer 23

A reusable safety switch that breaks the circuit when the current becomes too high.