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Principles of Science Chapter 1 -3
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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
mass
density= --------------------
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
distance
speed = -----------------------
time
What is the formula to calsulate average speed?
The formulas is:
total distance
average speed= -------------- total time
The fomula for acceleration
change in velocity
acceleration = ------------------
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?
meter
kilogram
second
kelvin
mole
candela
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 science
Physical 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 problem
Gather Information
From Hypothesis
Test Hypothesis
Analyze Data
Hypothesis or Hypothesis
not supported
supported
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 direction
change in speed
change 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 force
acceleration = --------------
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
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Author
Hattieshouse
ID
215226
Card Set
Principles of Science Chapter 1 -3
Description
Clark County School District Freshman Science
Updated
2013-04-23T19:26:32Z
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