Section 1

Question 1

Electrical Energy

Answer 1

Energy made by the flow of electrical charges flowing through a conductor.

Question 2

Static electricity

Answer 2

Electrical charges caused by friction that causes a spark, typically produced when two object that are not good conductors rub together.

Question 3

Proton

Answer 3

Objects that don’t have many electrons are positively charged are called protons.

Question 4

Electron

Answer 4

Objects that have lots of extra electrons are negatively charged are called electrons.

Question 5

Neutral Charge

Answer 5

objects that have equal amount of protons and electrons are neutral charged.

Question 6

Charge seperation

Answer 6

concentration of a similar charges in a specific area of a neutral object, caused by advance of a charge object.

Question 7

Electrical Discharge

Answer 7

sudden transfer of electrical charge from one object to another indicated by a spark.

Question 8

Van De Graaff

Answer 8

a

Question 9

Electrical Current

Answer 9

steady flow of charged particles .

Question 10

Amperes

Answer 10

unit of electrical current.

Question 11

Voltage

Answer 11

a measure of how much electrical energy a charged particle carries.

Question 12

Circuit

Answer 12

complete path that charged particles flow through.

Question 13

Load

Answer 13

device in a circuit that converts electrical energy to another form of energy.

Question 14

Source

Answer 14

a place, person, or thing from which something comes or can be obtained.

Question 15

Conductor

Answer 15

a material that electric charge can move through easily.

Question 16

Potential Difference

Answer 16

change in the potential energy of electric charge compared to its potential energy at a reference point, such as the ground.

Question 17

Volt

Answer 17

unit of voltage.

Question 18

Voltmeter

Answer 18

instrument for measuring potential difference in volts.

Question 19

Insulators

Answer 19

substance that strongly resists the flow of electricity.

Question 20

3 prong plug

Answer 20

electrical connector that ensures proper grounding of the electrical circuit with the connected device.

Question 21

Fuse

Answer 21

thin piece of metal that melts to break an electrical circuit when excess current flow occurs.

Question 22

Circuit Breaker

Answer 22

special wire that heats up and turns off switch when excess current flows through an electrical circuit.

Question 23

Electrochemical cell

Answer 23

produces electricity from chemical reactions.

Question 24

Dry cell

Answer 24

cell that has its electrolyte in the form of a paste, usually in a sealed case.

Question 25

Electrolyte

Answer 25

liquid or paste that conducts electricity because it contains ions.

Question 26

Wet cell

Answer 26

electrochemical primary cell having a liquid electrolyte.

Question 27

Ion

Answer 27

atom that has become electrically charged because it has lost or gained electrons.

Question 28

Electrode

Answer 28

conductor through which electric current enters or leaves a device or material.

Question 29

Primary cell

Answer 29

cell that produces electricity by means of a chemical reaction that cannot be reversed.

Question 30

Rechargeable cell

Answer 30

cell that produces electricity by means of a chemical reaction that can be reversed by using an external source to run electricity back through the cell.

Question 31

Secondary cell

Answer 31

rechargeable cell.

Question 32

Battery

Answer 32

set of cells connected together.

Question 33

Electrolysis

Answer 33

decomposition of a substance by an electric current.

Question 34

Electrochemistry

Answer 34

study of chemical reactions involving electricity.

Question 35

Electroplating

Answer 35

use of electricity to coat a thin layer of metal onto an object.