# Shared Flashcard Set

## Details

EDT 181
Miami University: EDT 181
89
Education
09/16/2009

Term
 Properties
Definition
 Characteristics
Term
 referent
Definition
 refer to. Ex: sky blue
Term
 measurement
Definition
 process of comparing to a unit
Term
 unit
Definition
 agreed upon referent
Term
 measurement process
Definition
 1. comparing unit to property 2. following a procedure which specifies how the comparison is made 3. counting how many standard units describe the property
Term
 Standard Unit
Definition
 decided upon units ex: metric/english system
Term
 Yard
Definition
 distance from head to finger tip
Term
 Inch
Definition
 wrist to finger tip
Term
 fathom
Definition
 Arms stretched out
Term
 foot
Definition
 length of foot
Term
 cubit
Definition
 Elbow to finger tip
Term
 English system
Definition
 Inch, foot. most are reference from the human body
Term
 Metric system
Definition
 established by french academy, uses centimeter, meter.
Term
 SI
Definition
 international system of units
Term
 Fundamental properties
Definition
 Cannot be defined in simpler terms that what is it measure as. EX: length, mass, time, charge
Term
 meter
Definition
 standard unit for length in metric system defined as distance that light travels in a vaccuum during a certain time period
Term
 kilogram
Definition
 standard unit for mass in metric system defined as the inertia of an object
Term
 second
Definition
 standard unit of time in metric system
Term
 Measurements of 10
Definition
 10 millimeters, centimeter, decimeter, meter
Term
 data
Definition
 can be used to describe objects, conditions, events, or changes that might be occuring.
Term
 Volume
Definition
 size of an object. (how much space something occupies)
Term
 Area
Definition
 extent of a surface
Term
 ratio
Definition
 relationship between two numbers that is obtained by dividing an object
Term
 density
Definition
 mass/volume
Term
 quanitities
Definition
 measured properties
Term
 Equation
Definition
 quanities on one side are set equal to the other side
Term
 variable
Definition
 refers to a specific quanitity of an object or event that can have different values.
Term
 direct proportion
Definition
 an increase or decrease in one variable results in the same relative increase or decrease in a second variable
Term
 inverse proportion
Definition
 one variable decreases while the other increases
Term
 proportionality constant
Definition
 sometimes given the symbol k, can be a numerical constant
Term
 pi
Definition
 circumference/diameter of a circle
Term
 hypothesis
Definition
 educated quess
Term
 experiment
Definition
 a recreation of an event or occurance in a way that enables a scientist to prove or disprove a hypothesis
Term
 controlled experiment
Definition
 compares two situations in which all the influencing factors are identical except one.
Term
 control group
Definition
 the situation used as the basis of comparison
Term
 experiemental group
Definition
 the single influencing factor that is allowed to be different in the experiemental group
Term
Definition
 (means false) is not science but uses the appearance or language of science to mislead people into thinking that something has scientific validity
Term
 scientific law
Definition
 describes an important relationship that is observed in nature to occur consistently time after time.
Term
 scientific principle
Definition
 describes a more specific set of relationships than is usually identified in a law.
Term
 model
Definition
 is a description of a theory or idea that that accounts for all known properties
Term
 theory
Definition
 a broad working hypothesis that is based on extensive experimental evidence. ex: a scientific theory tells you why something happens.
Term
 metric system
Definition
 based off referents found in nature
Term
 Modern science
Definition
 300 years ago during the time of galileo and newton
Term
 principle
Definition
 develops when a hypothesis is proved
Term
 important aspects of motion
Definition
 1) a change or position 2) the passage of time
Term
 Motion of objects
Definition
 described by using combinations of the fundamental properties of length and time
Term
 3 properties of motion
Definition
 speed, velocity, and acceleration
Term
 speed
Definition
 = distance/time
Term
 constant speed
Definition
 equal distance per equal unit of time
Term
 instanaenous speed
Definition
 spped at any given moment
Term
 average velocity
Definition
 average distance/average time
Term
 acceleration
Definition
 change in velocity/time elapsed
Term
 velocity
Definition
 speed and direction of an object in motion
Term
 force
Definition
 push or pull that is acting on an object
Term
 net force
Definition
 sum of all of the forces acting on an object
Term
 fundamental forces
Definition
 gravitational, electromagnetic, weak, strong
Term
 inertia
Definition
 the tendency of an object to remain in unchanging motion whether actually at rest or moving in the the absence of an unbalanced force
Term
 free fall
Definition
 objects fall towards the earth with out air resistance
Term
 2 types of motion
Definition
 horizontal, straight line motion and the vertical motion of dropped objects that accelerate toward the surface of the earth
Term
 Laws of motion
Definition
 1) the objects have inertia, a tendency to resist a change in motion 2) that forces are inloved in a charge of motion
Term
 1st law of motion
Definition
 every object retains its state of rest or its state of uniform in straight-line motion unnless acted upon by an unbalanced force
Term
 Newton's 2nd law of motion
Definition
 the acceleration of an object is directly proportional to the net force action on it and inversely proportional to the mass of an object.
Term
 mass
Definition
 the property that determines how much an object resists a change in it's motion
Term
 Newton's third law of motion
Definition
 whenever two objects interact, the force exerted on one object is equal in size and opposite in direction to the force exerted on the other object.
Term
 momentum
Definition
 the product of mass (M) of an object and its velocity (V)  momentum=mass x velocity
Term
 impulse
Definition
 force and time of application
Term
 centripical
Definition
 center seeking force
Term
 centrifugal force
Definition
 outward tug
Term
 newton's law of gravitation
Definition
 every object in the universe is attrracted to every other with a force that is directly proportional to the product of their masses and inversely proportion to the square of the distances between them
Term
 gravity
Definition
 9.8 meters squared
Term
 distance
Definition
 =1/2 acceleration*time
Term
 work
Definition
 = force * distance
Term
 joule
Definition
 (newton meter) unit of work
Term
 power
Definition
 work/time
Term
 horse power
Definition
 550ft/lbs
Term
 energy
Definition
 the ability to do work
Term
 potential energy
Definition
 energy due to position
Term
 kinetic energy
Definition
 (energy of motion)=1/2mass*velocity
Term
 mechanical energy
Definition
 form of energy of familiar objects and machines
Term
 chemical energy
Definition
 form of energy involved in chemical reations
Term
Definition
 energy that travels through space
Term
 electrical energy
Definition
 energy from electromagnetic interactions
Term
 nuclear energy
Definition
 energy source in power plants
Term
 law of conservation energy
Definition
 energy is never created or destroyed. energy can be converted from one to another form, but the energy remains constant
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