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SECTION 1-5 PHYSICAL SCIENCE
110 point science test to study for
32
Science
8th Grade
09/10/2012

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Cards

Term
Making an Inference
Definition
An interpretation based on observations and past knowledge
Term
Predicting
Definition
Forecasting what will happen in the future based on past knowledge and evidence
Term
Scientific Inquiry (Plural...)
Definition
Investigations that gather evidence
Term
Scientific Problem
Definition
A question to be answered by making observations
Term
Variables
Definition
Factors that can change in an experiment
Term
Operational Definition (Tells someone...)
Definition
Tells someone how to do something, or how to measure a variable
Term
Scientific Theory (Explanation for...)
Definition
A well tested explanation for a wide range of observations or experimental results
Term
Scientific Law (What is expected...)
Definition
A statement that describes what scientists expect to happen every time under a particular set of conditions
Term
SI
Definition
International System of Units
Term
Weight
Definition
Force of Gravity acting on an object
Term
Mass
Definition
Amount of matter in an object
Term
Volume
Definition
Amount of space an object takes up
Term
How to calculate volume
Definition
LxWxH = cm^3
Term
Irregular Shaped Solid
Definition
Add object and subtract the difference of before the object was added and after
Term
Density
Definition
Ratio of Mass over Volume
Term
Estimate (Something based on something...)
Definition
Approximation based on reasonable assumptions
Term
Accuracy (How close ____ is to _____)
Definition
How close a measurement is to its true value
Term
Reproducibility (How close...)
Definition
How close a group of measurements are to each other
Term
Significant Figures
Definition
All digits that are measured exactly plus one digit that is estimated
Term
Difference between precision and accuracy
Definition
accuracy means getting a result close to the real answer, while precision is getting a similar result every time you try.
Term
When adding, subtracting, multiplying or dividing, the answer can only have...
Definition
the same number of sig figs as the number with the fewest sig figs
Term
Precision (A measure of what?)
Definition
A measure of the exactness of measurement
Term
Line Graph
Definition
shows how the RV changes due to the MV
Term
First Step in Making a Graph
Definition
Draw Axes
Term
Second Step in Making a Graph
Definition
Label Axes
Term
Third Step in Making a Graph
Definition
Scale of #s
Term
Fourth Step in Making a Graph
Definition
Plot data
Term
Fifth Step in Making a Graph
Definition
Connect Points
Term
Sixth Step in Making a Graph
Definition
Title
Term
Line of Best Fit
Definition
Smooth line that reflects general patterns
Term
Slope
Definition
"Y do I have to do slope?"
How much Y has changed for every change in X
Term
How to calculate Slope
Definition
y2-y1
______

x2-x1
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