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Physical Science > Electricity May 15 > Flashcards

Electricity May 15 Flashcards

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0
Q

The charge on a proton is called?

A

Positive

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1
Q

What are the 3 ways static electricity can r transferred?

A

Friction, Conduction, induction

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2
Q

The charge on an electron is called?

A

Negative

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3
Q

The interaction between electrical charges is?

A

Electricity

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4
Q

The attraction or repulsion between electric charges

A

Electric force

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5
Q

What is a region around a charged object where the object electric force is exerted on other charged objects?

A

Electric field

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6
Q

Electric field lines are drawn with arrows to show the (blank) of the electric force

A

Direction

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7
Q

The greater the distance from a charge object the (blank) the electric field

A

Weaker

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8
Q

When there are two of more charges, the electric fields of each individual charge (blank) by repelling or attracting.

A

Combine

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9
Q

How can objects become charged?

A

Friction, induction, conduction

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10
Q

The build up of charges on an object is called

A

Static electricity

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11
Q

If an object gains electrons, what will be it’s overall charge?

A

Negative

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12
Q

What law states that charges are not created nor destroyed?

A

Conservation of charges

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13
Q

The transfer of electrons from one subject to another by rubbing

A

Friction

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14
Q

The transfer if electrons from a charged object to another object by direct contact

A

Conduction

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15
Q

The movement of electrons to one part of an object by the electric field of another object

A

Induction

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16
Q

An electric charge can be detected by an instrument called?

A

Electroscope

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17
Q

The loss of static electricity as electric charges transfer from one object to another is called?

A

Static discharge

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18
Q

What is lightning an example of?

A

Static discharge

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19
Q

Is the continuous flow of electric charges through a material

A

Electric current

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20
Q

What is the unit for the rate of current?

A

Amp; a; ampere

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21
Q

What must occur to produce electric current?

A

Charges must flow continuously from one place to another

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22
Q

A complete unbroken path through which electric charges can flow is an…?

A

Electric current

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23
Q

A material through which charges flow easily?

A

Conductor

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24
Q

A material through which charges cannot move easily

A

Insulator

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25
Q

Why are conduction electrons able to move throughout a conductor?

A

They have a path to follow

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26
Q

What is the energy an object has as a result of it’s position

A

Potential energy

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27
Q

The unit of measure of voltage?

A

Volt

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28
Q

A device that creates a potential difference in an electric circuit (where the electric potential energy is bigger)

A

Voltage source

29
Q

What is a battery and generator?

A

Voltage source

30
Q

The measure of how difficult it is for charges to glow through a matter

A

Resistance

31
Q

The unit of measure of resistance?

A

Ohm

32
Q

What are the four factors that determine the resistance if a wire or any object?

A

Material, length, diameter, temperature

33
Q

Ability an object has

A

Chemical energy

34
Q

When there’s a rearrangement

A

Chemical reaction

35
Q

A device that converts chemical energy into electrical energy

A

Electrochemical cell

36
Q

2 metals in electrochemical cells

A

Electrode

37
Q

A substance that conducts electric current

A

Electrolyte

38
Q

The part of an electrode above the surface of an electrolyte

A

Terminal

39
Q

A combo of 2 or more electrochemical cells in a series

A

Battery

40
Q

An electrochemical cell in which the electrolyte is a liquid

A

Wet cell

41
Q

An electrochemical cell in which the electrolyte is a paste

A

Dry cell

42
Q

The energy stored in chemical compounds is…?

A

Chemical energy

43
Q

The process in which substances change into new substances with different properties

A

Chemical reaction

44
Q

A device that transforms chemical energy into electrical energy is called..?

A

Electrochemical cells

45
Q

The part used to connect the cell to a circuit

A

Terminal

46
Q

A metal in an electrochemical cell

A

Electrode

47
Q

A substance that conducts electric current

A

Electrolyte

48
Q

What occurs between the electrodes and electrolyte in an electrochemical cell

A

Chemical reactions

49
Q

A combo of 2 or + electrochemical cells in a series is called..?

A

Batteries

50
Q

Ohm’s law says that (blank) is equal to the voltage divided by the current

A

Resistance

51
Q

Ohm’s law formula

A

Resistance= voltage divided by current; voltage = current times resistance

52
Q

3 basic features all electric circuits must have

A

Devices run by electrical energy
Source of electrical energy
Connected by conducting wires

53
Q

If all parts of an electric circuit are connected one after another along 1 path

A

Series circuit

54
Q

In a series circuit have many paths are there for a current to take?

A

1

55
Q

If different parts of a circuit are in separate branches, the circuit is called a..?

A

Parallel circuit

56
Q

The rate at which energy is transformed from one form to another is known as..?

A

Power

57
Q

What is the unit of power?

A

Watt

58
Q

What two factors does the power of a light bulb or appliance depend on?

A

Voltage and current

59
Q

What two factors does the energy use in an electric bill depend on?

A

Voltage (watts) and time (seconds)

60
Q

Formula for amount of energy used by an appliance

A

Energy= power times time

61
Q

Electric power is usually measured in thousands of watts, or…?

A

Kilowatts

62
Q

The unit of electrical energy is…?

A

Kilo watt-hours

63
Q

3 potential dangers when high voltage wires are damages?

A

Short circuits, electric shocks, fire

64
Q

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

A

Short circuit

65
Q

Most buildings have a wire that connects all electric circuits to the..?

A

Ground

66
Q

A plugs round prong which connects any metal piece if an appliance to the ground wire of a building is…?

A

Third prong

67
Q

A device that contains a thin strip of metal that will melt if there is to much current through it

A

Fuse

68
Q

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

A

Circuit breaker

69
Q

What happens when a fuse overloads?

A

Needs to be replaced

70
Q

What happens when a circuit breaker is overloaded?

A

Reconnect the metal band to the wires

71
Q

a device that measures current

A

Ammeter

Physical Science (2 decks)

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