Electricity, Magnetism, Sound, Light

Front 1

amp

Back 1

the unit used to measure electric current

Front 2

amplitude

Back 2

a measure of how hard air molecules push on other molecules next to them as a sound wave passes through the air

Front 3

circuit

Back 3

a complete path of conductors that an electric current can flow through

Front 4

circuit breaker

Back 4

a switch that automatically opens a circuit when too much electricity passes through it

Front 5

colloid

Back 5

a special type of mixture in which the particles of one material are scattered through another and block the passage of light

Front 6

compression

Back 6

an area in a sound wave where air molecules are pressed together

Front 7

concave lens

Back 7

a lens that is thinner in the center and thicker at the edges; it bends light outward

Front 8

conductor

Back 8

a material that allows heat energy or electricity to pass through easily

Front 9

convex lens

Back 9

a lens that is thicker in the middle and thinner at the edges; it bends light inward

Front 10

decibel

Back 10

the unit used to measure the loudness of a sound

Front 11

dry cell

Back 11

a device that uses chemicals to produce electricity; a battery

Front 12

electric circuit

Back 12

a constant flow of electrons through a conductor

Front 13

electric charge

Back 13

the movement of electrons; can be a positive or negative charge

Front 14

electricity

Back 14

a form of energy that is produces when electrons move from one place to another

Front 15

electromagnet

Back 15

a temporary magnet created by a flow of an electric current around an iron bar

Front 16

electromagnet spectrum

Back 16

a group of waves, including light which can travel through space

Front 17

filament

Back 17

a thin wire that glows in some kinds of light bulbs

Front 18

focal point

Back 18

the point where light rays come together after passing through a lens

Front 19

frequency

Back 19

the number of waves that move past a point in a certain amount of time

Front 20

fuse

Back 20

a device that prevents fires by melting when too much electricity flows through a circuit

Front 21

light

Back 21

a form of energy that travels in waves and can move through empty space where there is no air

Front 22

magnet

Back 22

an object that attracts iron and a few other magnetic materials like steel

Front 23

magnetic field

Back 23

the area around a magnet where the force of magnetism can be felt

Front 24

magnetism

Back 24

a force that pulls magnetic materials across a distance

Front 25

magnifier

Back 25

a tool with a lens that makes things look bigger so you can see them more clearly

Front 26

motor

Back 26

a device that uses electricity to produce motion

Front 27

opaque

Back 27

a substance that completely blocks light from passing through it

Front 28

parallel circuit

Back 28

an electric circuit in which each device has its own separate loop

Front 29

pitch

Back 29

how high or low a sound is

Front 30

prism

Back 30

a glass bar that separates white light into the colors of the rainbow

Front 31

rarefaction

Back 31

an area in a sound wave where air molecules are spread out

Front 32

reflection

Back 32

the bouncing back of light rays from a surface

Front 33

refraction

Back 33

the bending of light rays as they pass through a material

Front 34

resistor

Back 34

a device in a current that slows the electric current but does not stop it

Front 35

series circuit

Back 35

an electric circuit in which the devices are connected in one continuous loop

Front 36

solar

Back 36

a device that changes solar energy to electric energy

Front 37

sound

Back 37

a form of energy produced by vibrating objects

Front 38

static electricity

Back 38

the buildup of electric charges on an object

Front 39

switch

Back 39

a device that opens and closes an electric circuit to stop and start the flow of electrons

Front 40

transparent

Back 40

allows all light to get through; the objects can be seen clearly

Front 41

vibration

Back 41

a rapid back and forth movement that produces sound

Front 42

visible light

Back 42

electromagnetic waves that you can see

Front 43

volt

Back 43

the unit to measure the push of electrons in a circuit

Front 44

voltage

Back 44

the push that makes an electric current move through the circuit

Front 45

wavelength

Back 45

the distance between one wave and the next wave

Front 46

lens

Back 46

a curved piece of glass that bends light rays

Front 47

insulator

Back 47

a material that does not let heat energy or light pass through it easily