The nature of science
an organized set of investigations procedures is called
scientific method
metric system
What are the 4 major types of graphs
line, bar, circle (pie), and scatter
how far an object has moved
distance
distance per unit of time with direction
velocity
a push a pull
force
a possible explanation, an educated prediction and testable
hypothesis
unit used for mass
gram
can show any relationship where the dependent variable changes due to a change in the independent- information between the dots
line graph
the distance and direction of an objects change in position
displacement
the rate of change in velocity
acceleration
when 2 or more forces act on object at the same time they combine to form
net force
How a hypothesis is written
if, then statement
unit used for length
meter
comparing information collected by counting or individual units that are not connected
bar graph
the distance an object travels per unit of time
speed
what are the 3 ways to change acceleration
speeding up (increasing), slowing down (decreasing, and change of direction
forces on an object that are equal in size and opposite in direction
balanced forces
the variable that the scientist changes
independent variable
unit used for temperature
celsius and Kelvin
shows percentages
circle or pie charts
the equation for speed include units
S=d/t : meters per sec : m/s
equation for acceleration
change in velocity / time
tendency for an object to resist any change in its motion
inertia
the variable that is measured
dependent variable
unit used for volume
liter
what part of the scientific method includes/uses graphs
data analysis
the speed at any given point
instantaneous speed
what is the unit for acceleration
m/s2
an object in motion at a constant velocity keeps moving at that velocity (or an object at rest will stay at rest) unless an unbalanced net force acts on it
Newton's first law
what is placed on the x axis
independent variable
unit used for time
seconds
Why do we make graphs
visual representation and patterns
on a motion graph what is on the x axis and what is on the y axis
x axis : time
y axis : distance
what does the flat line on a distance time graph represent
not moving
what is the equation for average velocity
V= df-di /tf-ti m/s
what is placed on the y axis
dependent variable
unit used for density
mass/volume : grams/liters
list what every graph needs
title, labels and units
what on a distance time graph shows the speed?
slope
what does a flat line on an velocity time graph represent
constant acceleration
what is the equation for average acceleration
aa = vf-vi /tf-ti m/s2