Electricity

Front 1

battery

Back 1

a combination of cells that create opposing poles resulting in the ability to create an electrical current

Front 2

brightness

Back 2

radiation of light

Front 3

bulb

Back 3

an incandescent electric lamp

Front 4

buzzer

Back 4

a signaling apparatus that produces a buzzing sound due to an electrical current and electromagnet

Front 5

closed circuit

Back 5

a complete circuit, electricity is flowing

Front 6

circuit

Back 6

a complete or partial path through which an electrical current might flow

Front 7

compass

Back 7

an instrument used for determining direction by a freely rotating magnetized needle that show magnetic north

Front 8

conductor

Back 8

materials through which energy, such as electricity moves rapidly

Front 9

connect

Back 9

to band or link together

Front 10

contact

Back 10

a junction of electric conductors

Front 11

copper

Back 11

metallic element that is used as a conductor of electricity

Front 12

current

Back 12

the movement or flow of an electric charge

Front 13

diameter

Back 13

the width or thickness of a circular figure or object

Front 14

electron

Back 14

a negatively charged particle in an atom

Front 15

energy

Back 15

the capacity for doing work and overcoming resistance

Front 16

filament

Back 16

the fine metal wire in a light bulb that glows when heated by an electric current

Front 17

fuse

Back 17

a strip of easily melted metal, usually set in a plug, place in a circuit as a safeguard; if the current becomes too strong, the metal melts, breaking the circuit

Front 18

glass bead

Back 18

support wires of a bulb are placed in this bead for stability

Front 19

insulated

Back 19

to cover with non conducting material to prevent or reduce the transfer of electricity, heat, or sound

Front 20

insulator

Back 20

any kind of matter that does not carry electricity well or at all (glass, plastic, rubber)

Front 21

length

Back 21

the linear extent of anything as measured from end to end

Front 22

liquid

Back 22

the state of matter that takes the shape of its container, feels wet, and takes up definite space (not solid or gas)

Front 23

magnetic field

Back 23

the space around a magnet that has the ability to attract another magnet

Front 24

material

Back 24

the substance of which a thing is made

Front 25

meter

Back 25

an instrument used to measure quantity, distance, etc

Front 26

negative

Back 26

charges with electricity caused by an excess (too many)of electrons

Front 27

non-conductor

Back 27

materials through which electricity cannot pass

Front 28

observe

Back 28

to become aware of an object or using the senses to identify properties

Front 29

open circuit

Back 29

an incomplete or broken circuit, the electricity stops flowing

Front 30

parallel circuit

Back 30

the arrangement of electrical devices where all positive terminals are joined to one conductor and all negative ones to another conductor so that there is more than one path for the electricity to follow. If one bulb fails to function, the other bulbs will stay lit

Front 31

path

Back 31

a route along which something moves

Front 32

polarity

Back 32

the quality or condition in a body which exhibits opposite powers in opposite direction

Front 33

poles

Back 33

the ends of a magnet, usually labeled north and south

Front 34

positive

Back 34

charged with electricity cause by a lack of (not very many) electrons

Front 35

prediction

Back 35

an educated guess

Front 36

property

Back 36

an essential or distinctive trait or characteristic of a living or non living thing

Front 37

resistance

Back 37

the opposition offered by a material to the steady flow of electric current

Front 38

rheostat

Back 38

an adjustable resistor used for controlling the current in a circuit (as in dimming lights)

Front 39

schematic

Back 39

a symbolic representation of all parts of a system

Front 40

series circuit

Back 40

a circuit which all parts are connected end to end so that is only one part through which electricity can flow

Front 41

solution

Back 41

a mixture of two substances

Front 42

strategy

Back 42

a detailed plan for reaching a goal

Front 43

support wire

Back 43

wires in a bulb that hold the filament in places

Front 44

switch

Back 44

a device for making or breaking a connection in an electrical circuit

Front 45

symbols

Back 45

letters, numbers, or drawing that represent meaningful concepts or ideas

Front 46

system

Back 46

a group of interacting objects

Front 47

terminal

Back 47

the points on the battery and bulb which must be touched in order to make a complete circuit

Front 48

voltage

Back 48

the measurement of electrical pressure that flows through a wire

Front 49

watts

Back 49

a unit of electric power, equal to the power in a circuit in which one amp flows across a potential difference of one volt