Science Word

Front 1

testable questions

Back 1

question that can be ancwered through an investigation

Front 2

technology

Back 2

the opplaction of knowlege to improve human life

Front 3

physical science

Back 3

the study of Matter and Energy

Front 4

model

Back 4

idea, system or structure that shows what you are explaning

Front 5

critical thinking

Back 5

using certin skills to solve a problem

Front 6

observation

Back 6

using secience to get information

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hypothesis

Back 7

prediction

Front 8

theroy

Back 8

explanation based on obersvation suporting results

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scientific law

Back 9

rules fo nature

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green house effect

Back 10

heating the earth by the atmosphere trapping suns energy

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ozone layer

Back 11

part of the atmosphere that protects life on earth

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experament

Back 12

test

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control

Back 13

showing results relat to condition

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constant

Back 14

factor that doesnt change in an experament

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independent varible

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factor thats adjusted by experiment

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dependent varible

Back 16

depends on independent varible

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line graph

Back 17

used to show trend or continus change

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bar graph

Back 18

used for showing information collected by counting

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pie graph

Back 19

used to show how some fixed quantity is broken down into parts

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speed

Back 20

rate of change in pasition

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instantneous speed

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lazer that picks up speed

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constant speed

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same speed

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average speed

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total distance travled divided by total time travled

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velocity

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distance over time or direction

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acceleration

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rate of change in velocity

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acceleration

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rate of change in veloicty

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force

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is a push or pull one body exerts on another

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balance force

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force equal in size and opposite in direction

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net force

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always changes the volicty of the object

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inertia

Back 30

the tendancy of any object to resit any changes in its motion

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friction

Back 31

the force that opposes motion between two surfaces that are touching each other

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gravity

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every object in the universe exerts a force on ever other object

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weight

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most often used in refrance to the gravitonal force between earth adn a body at earths surface

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newtons law of motion

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a net force acting on an object cause the object to accelerate in the direction of force f= m*a

*= mutiply

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air restance

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in force air exerts on among objects. this force acts int eh opposite direction to that of the objects moton

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terminal velocity

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is the highest velocity that will be reached by a falling object

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projectile

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anything that is thrown or shot through the air

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centripetal acceleration

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accerleration towards the center of a curved or circular path

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energy

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the ability to cause change

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knetic energy

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energy in the form of motion KE=1/2mv2

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potential energy

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stored energy

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work

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the transfer of energy through motion. in order for work to take place a force most be exerted through a distance

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kinetic potential and work is measured in

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joules

Front 44

mechanical energy

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the total amount of kinetic and potential energy

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law of conservation of energy

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states that energy may change from cant be created or destrayed under ordinary conditions

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mechanical energy

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inthe moving things

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electromagnetic

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energy in moving electrons

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static electricty

Back 48

accumlation of electric charge in an object no current flows because the electring is static <motionless>

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electric feld

Back 49

force surrounding an electricon that affects anything near by that has an electric charge is stronged near the electron and weakness with distance

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conductor

Back 50

material that allows heat or elecrons to move easily through

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insolator

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a materal through witch heat or electricty cant move easly

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electroscope

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adevice used to detect preshur of electric dangers

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lighting rod

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metal rod mounted a top a structor and connected to earth to leak off electrly charged between clouds and earth before grow strong enough to cause lightning

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potential differance

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differance in electrical and potential energy between two points

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circut

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closed path through whitch electrons can flow

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current

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flow of electros through conductor meshured in amperes with m meters

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dry cell

Back 57

power sorce that generates current by chemical reaction. dry because it uses thick pasty electrolyte in a sealed contoiner insted of liquid elecrolyte as in a car battery

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wet cell

Back 58

power source that generates electric by chemical reaction wet because it used electrolyte as in a autombile batery

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resistance

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oposton to flow of electrons through conductor measured in ohms with ohmmetter

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ohms law

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german physicist Gerorge Ohm stated that electric current equals the potential diffrence or voltage divided by restance to current flow

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series curcut

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electrical circute where the current only flows in one path if it is interupted at any point it stops current flow

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parralle circut

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current flow in several seperate branches if one branch is interupted
current still flows to teh others

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electrical power rate

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of witch electrical is conected to another from of energy such as heat meshurd in kilowat hours

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kilowat hours

Back 64

unit of electrial power . 1 kilowatt 1000 wats of power in 1 hour