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Ch 1 Intro to Physical Science Key Terms
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Gravity
Terms in this set (41)
science
study of natural world
observing
using one or more senses to gather info
inferring
making an inference
predicting
making a forecast
chemistry
studying properties of matter
physics
study of matter, energy, forces
scientific inquiry
refers to way scientists study
hypothesis
if, then statment
parameter
factor that can be measured in an experiment
manipulated variable
variable that is purposely changed
responding variable
changes because of manipulated variable
controlled experiment
when only one parameter is manipulated at a time
data
evidence gathered through observations
communicating
sharing ideas and conclusions
model
represents an object or a process
scientific theory
explanation for observations and results
scientific law
what scientists expect to happen under specific conditions
SI
expanded metric system
weight
force of gravity on you
mass
amount of matter an object has
volume
amount of space an object takes up
meniscus
curve at top of liquid in a cylinder
density
mass per unit volume
Celsius scale
temperature scale
Kelvin scale
SI unit of temp
absolute zero
coldest temperature
estimate
approximation of number
accuracy
how close to a measurement is to true or actual value
reproducibility
how close a group of measurements are to each other
significant figures
all significant digits that have been measured exactly
precision
exactness of measurement
graph
picture of data
horizontal axis
x axis
vertical axis
y axis
origin
where both axes cross
coordinate
numbers that determine position on graph
data point
location of intersection
line of best fit
line that reflects general pattern of graph
linear graph
when data points yield a straight line
slope
steepness of graph
nonlinear graph
when data points do not fall in a staight line
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