# Principles of Science Chapter 1 -3

 What's Newton's first law of motion? Objects moving at a Constant velocity keeps moving unless an unbalanced net force acts on it net force A Combination of forces Acting on an object. inertia The tendency of an object to resist a change in motion force Push or pull on an object balanced force Equal but opposite forces acting on an object negative acceleration The acceleration of an object that is slowing down Positive acceleration The acceleration of an object that is Speeding up Acceleration The rate of Change in velocity Graph A visual display of Information or data Velocity A measure of speed Of an object and the direction it is traveling Speed The distance an object travels in an amount Of time Instantaneous speed the speed of an object at one point in time distance A measure of how far an object has moved displacement the distance and direction that something moved from a starting point Average speed the total distance traveled in a unit of time The formula for density                       massdensity=  --------------------                    volume V = l x w x h The formula for volume volume = length x width x height nano- The SI prefix for one billionth (0.000 000 001) micro- The SI prefix for one millionth (0.000 001) milli- The SI prefix for one thousandth (0.0001) centi- The SI prefix for one hundredth (0.01) deci- The SI prefix for one tenth (0.1) kilo- The SI prefix for one thousand (1,000) What is SI The International System of Units, which is based on multiples of ten Candela The SI measure for the intensity of light symbol  (cd) Mole The SI measure for amount of substance symbol      (mol) Kelvin The SI measure for temperature sysmbol   (K) Ampere The SI measure for electric current symbol     (A) Meter The SI measure for length and/or distance symbol     (m) Kilogram The SI measure for mass symbol    (kg) second The SI measure for time symbol      (s) The formula for speed                                          distancespeed =  -----------------------                                 time What is the formula to calsulate average speed? The formulas is:                        total distanceaverage speed= --------------                         total time The fomula for acceleration                      change in velocityacceleration = ------------------                            time What is the formula to calculate change in velocity? The formula is: change    in     =  final     -    initial velocity    velocity      velocity What are the SI base units of measure? meterkilogramsecondkelvinmolecandela standard An exact quanity that people agree to use to compare mesurements Earth Science The investigation of earth and space. Physical sciense Thy study of energy and matter that is scientific in nature Life Science The study of living things What are the three main categories of science? Life science Earth sciencePhysical sciense technology The application of science to help people scientific law A statement about what happens in nature that seems true all the time Model Anything that represents an idea, event or object to improve understanding bias What is expected cjanges how results are viewed Hypothesis An explanation for a question or problem based on what you know and observe. mass the measrement of the quantity of matter in a object density The mass per unit volume of material   experiment An investigation that tests a hypothesis by collecting information under controlled conditions    What are the stpes of the scientific method? State the problemGather InformationFrom HypothesisTest HypothesisAnalyze Data Hypothesis   or    Hypothesis    not                 supportedsupported Scientific Method The steps a scientist follows when preforming an investigation Control A standard in an experiment against which results are compared Constant A condition in an experiment that dose not change Independent Variable In an experiment, the condition that is tested Dependent Variable The condition in an experiment that results from the changes made to the independent variable Variable A quantity that can have more that one value Scientia The latin word for knowledge List the three way velocity can change. change in directionchange in speedchange in motion What is Newton's second law of motion? The net force acting on an object causes the object to accelerate in the direction of the net force. Terminal velocity The highest speed a falling objest can reach Friction A force that opposes the slliding motion of two srufaces that a are touching each other Air resistance A force that opposes the movement of objects through air Sliding friction the force that opposes the motion of two surfaces sliding past each other Static friction the force that keeps two surfaces at rest from sliding over each other What is the formula to find acceleration when force and mass are known? net forceacceleration = --------------                           mass What is the fromula to find force when mass in know? net force = mass x acceleration Gravity An attractive force between two objects What is the law of Universal Gravitation? Allow us to find the force of gravity beween any two objects if their masses ans the distance beween them are known. Weight The gravitational force exerted on an object Centripetal acceleration Acceleration toward the center of a curved path. Centripetal force The net force exerted toward the center of a curved path What is Newton's third law of motion? To every action force ther is an equal and opposite reaction force. momentum the product of a moving object's mass and velocity What is the fromula for momentum? momentum = mass x velocity AuthorHattieshouse ID215226 Card SetPrinciples of Science Chapter 1 -3 DescriptionClark County School District Freshman Science Updated2013-04-23T19:26:32Z Show Answers