# Shared Flashcard Set

## Details

Exam Q1
vocabulary ch. 1-4
25
Physics
10/05/2009

Term
 Physics
Definition
 the study of matter and energy and their relationships
Term
 Galileo
Definition
 built the first telescope and invented the scientific method; father of modern experimental science
Term
 Scientific Method
Definition
 method of observing, experimenting, and analyzing
Term
 SI
Definition
 system internationale d'unites; international standards of measurement adapted from the metric system
Term
 Base Units
Definition
 the seven fundamental SI units of measure
Term
 Derived Units
Definition
 unit of quantity that is a combination of base units
Term
 Metric System
Definition
 a set of standards of measurement where units of different sizes are related by powers of 10
Term
 Base Quantities
Definition
 length, mass, time, temperature, amount of a substance, electric current, and luminous intensity
Term
 Mathematics
Definition
 often called the language of physics
Term
 Precision
Definition
 the degree of exactness with which a quantity is measured using a given instrument
Term
 Accuracy
Definition
 how well the results of an experiment agree with the measured and accepted value
Term
 Parallax
Definition
 the apparent shift in position of an object when it is seen from different angles
Term
 Slope
Definition
 the ratio of vertical change to horizontal change in a graph
Term
 Motion Diagram
Definition
 a tool for the study of motion that uses a series of images to show the position of a moving object after equal time intervals
Term
 Particle Model
Definition
 a simplified version of a motion diagram in which the object in motion is replaced by a series of single points
Term
 Coordinate System
Definition
 shows origin and direction
Term
 Origin
Definition
 the point in a coordinate systems in which the variables have a zero value
Term
 Position Vector
Definition
 the arrow on a motion diagram that's drawn from the origin to the moving object
Term
 Scalar Quantity
Definition
 quantity that has only magnitude
Term
 Vector Quantity
Definition
 quantity that has both magnitude and direction
Term
 Displacement
Definition
 the vector quantity that defines the distance and direction between 2 positions
Term
 Time Interval
Definition
 (^t) difference in time between 2 clock readings
Term
 Average Velocity
Definition
 the ratio of change of position to the time interval during which that change occurred
Term
 Average Acceleration
Definition
 the change in average velocity divided by time
Term
 Scientific Notation
Definition
 the expression of numbers as powers of 10
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