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Landon Jones
Chapter 2
15
Science
7th Grade
10/01/2018

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Term
Metric System 
Definition
The metric system is a system of measurements based on the number 10.
Term
SI
Definition
Scientist all over the world use Si Units to measure Length, volume, mass, density, temperature, and time.
Term
MASS
Definition
Mass is a measurement of the amount of matter an object contains. 
Term
Weight 
Definition

Weight is a measure of the of gravity acting on an object.

Term
Volume 
Definition
Is the amount of space an object takes up. 
Term
Meniscus
Definition
To determine the volume of the water, you should read the millimeter marking at the bottom of the curve.
Term
Density
Definition
Density is a measure of mass per unit of volume.The average density of an object equals its total mass divided by its total volume.
Term
Estimate
Definition
Is an approximation of a number based on reasonable assumptions.
Term
Accuracy
Definition
Refers to how close a measurement is to the true or accepted value.
Term
Precision
Definition
Refers to how close a group of measurements are to each other.
Term
Significant figures
Definition
Refers to the digits in a measurement.
Term
Percent error
Definition
Percent error's calculation's are used to determined how accurate, or close to the true value in an experiment.
Term
Mean
Definition
Is calculated by adding up all of the numbers and then dividing them, by there total number of item in the list.
Term
Median
Definition
The middle number in a set of data.
Term
Mode
Definition
The mode is the number that appears most often in a list of numbers.
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