## science 9 vocab semester 1

##### Created by:

blakem28  on January 3, 2011

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# science 9 vocab semester 1

 Acceleration(physics) a rate of change of velocity
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#### Definitions

Acceleration (physics) a rate of change of velocity
Ampere the basic unit of electric current
Attraction the force that brings objects together
Chemical energy energy stored in chemical bonds
Circuit A pathway for the flow of electricity
Conduction the transfer of energy between the particles of matter (typically a solid)
Conductor a substance that transmits heat or electricity easily
Constant continually recurring or continuing without interruption
Control In an experiment, the standard that is used for comparison
Current a flow of electricity through a conductor
Dependent variable the variable that is measured in an experiment
Distance the length of a path between two points
Electrical energy the energy of moving electric charges
Electrical potential The Potential energy per unit of electric charge
Electric Field a field of force surrounding a charged particle
Electricity The flow of electrical power or charge
Electromagnet A strong temporary magnet that uses electricity to produce magnetism
Electromagnetic radiation Energy that travels through space in the form of waves
Energy the ability to do work
Energy transformation A change from one form of energy to another
Force force into or from an action or state, either physically or metaphorically
Friction effort expended in rubbing one object against another
Generator converts mechanical energy into electrical energy
Graduated cylinder ..., instrument used to measure volume of a liquid
Gram metric unit of weight equal to one thousandth of a kilogram
Graph drawing illustrating the relations between certain quantities plotted with reference to a set of axes
Gravitational Field a force field that exists in the space around every mass or group of masses
Gravity the force of attraction between all masses in the universe
Heat energy energy released in the form of heat caused by the motion of moving molecules and the breaking of chemical bonds
Hypothesis an educated guess
Independent variable the experimental factor that is manipulated; the variable whose effect is being studied
Induction an act that sets in motion some course of events
Inertia the tendency of an object to resist any change in its motion
Insulator a material such as glass or porcelain with negligible electrical or thermal conductivity
Kilogram SI unit for mass
Kinetic energy energy of motion
Lubricate make slippery or smooth through the application of a lubricant
Magnet any material that attracts iron or materials containing iron
Mass a body of matter without definite shape
Mileage distance measured in miles
Mechanical energy energy in a mechanical form
Newtons Measurement of force
Nuclear energy energy stored in the nucleus of an atom
Ohm unit of resistance
Parallel circuit circuit in which electric current can follow more than one path
Pendulum an apparatus consisting of an object mounted so that it swings freely under the influence of gravity
Phase Change a change from one state (solid or liquid or gas) to another without a change in chemical composition
Polarization the phenomenon in which waves of light or other radiation are restricted in direction of vibration
Potential energy Energy that is stored and held in readiness
Repulsion the force by which bodies repel one another
Resistance a material's opposition to the flow of electric current
Scientific notation A mathematical method of writing numbers using powers of ten.
Series circuit a circuit in which the objects are connected in a single path
Solar energy energy from the sun
Sound energy energy of vibrations carried by air, water, or other matter
Speed distance travelled per unit time
Thermal energy Heat energy
Trial the act of testing something scientifically
Velocity the speed of an object in a particular direction
Volt unit for measuring voltage
Volume the amount space occupied by an object
Weight A measure of the force of gravity on an object
Work the transfer of energy to move somthing

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