65 terms

Physical Science Vocab and Formulas

this is the Vocab and Formulas for Physical Science chapters 1-5
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momentum
how much net force is needed to change a object
law of conservation of momentum
If a group of objects exerts forces only on eachother, their totaly momentum doesnt change
constraints
Designed resrictions for products from outside
pilot plant
A smaller version of the real production
vector
Quantity that is specified by both size and direction
speed
the distnace an object travels
velocity
The speed of the object and its direction of motoin
sliding friction
The force that acts in the opposite direction
static friction
frictional force that prevents two forces in contact
mass
The measurment of the quantity of an object
density
the mass per unit volume of a material
theory
An explanation of events based on knowledge
experiment
Tests the effect of one thing on another
control
the standare by which the test results are compared
weight
Gravitational Force exerted on an object
gravity
Attractive force between two objects
agricultural biotechnology
A collection of scienific tehniques
scientific method
An organized set of investagation procedures
accuracy
compares a measurment to the real of accepted value
potnetial energy
Stored energy due to position
air resistance
Opposes the mtion of objects that moves through air
net force
Two or more forces acting on an object at the same time
acceleration
Change in velocity divided by the time for the change to occur
displacement
The direction and distance of an objects final position from its initial position
control systems
a device that monitors a system
centripetal force
Net force exerted toward the center of a curved path
bias
Occurs when what the scientists expect changes in the way the results are viewed
dependent variable
The amount of growth in an experiment
variable
A factor that can express can cause a change in the results of an experiment
inertia
The tendency of an object to resist motion
technology
The application of science to help people
independent variable
The variable you change to see how it will affect the dependent variable
scientific law
what happens in nature, seems to be true all the time
joule
the SI energy unit
energy
The ability to do work
balanced force
Forces on an object that are equal in size and opposite direction
force
a push or pull on an object
proto-type
Full scale model that is used to test a product
computer simultions
A computer used to imitate a process
engineer
Researcher that is responsible for bringing technology
newtons thrid law
To every action, there is an opposite and equal reaction
centripetal acceleration
Acceleration toward the cener of a curved path
constant
A factor that doesnt change when other variables are added
newtons second law
The accleration of an object is in the same direction as the net force
percision
Describes how closley measurments are to each other and how carefully ther were made
volume
Amount of space occupied by an object
conservation of evergy
Energy cannot be created or destroyed
mechanical energy
Potential engery + Kinetic energy
chemical energy
Energy stored in Chemical bonds
elastic potential energy
Energy stored in something that can stretch
kinetic energy, formula
1/2 mv(2) squared
unbalanced force
Forces that do not have equal Net Force
average speed, formula
total distance (divided by) total time
instanteneous speed
your speed at the very instant of time
society
A group of people that share similar beliefs and values
graph
Visual display of data
newtons first law
Object that are in motion, tend to stay in motion. Objects that are at rest, tend to stay at rest
hypothesis
A possilbe explanation for the problem
model
Represents an idea or event
volume, formula
V=l.w.h.
average acceleration, formula
Final Velocity - Initial Velocity (divided by) Final time- Initial Time
acceleration, formula
net force (divided by) mass
gravitational potential energy, formula
m.g.h
weight, formula
m.g
momentum, formuala
m.v