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SidneyWCh.2
Sidney Ch.2
15
Science
7th Grade
10/01/2018

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Term
Metric System
Definition
A system of measurement based on the number 10
Term
SI
Definition
International System, abbreviated SI, is used as units to measure length, volume, mass, density, temperature, and time. It allows scientist to share and compare their work.
Term
Mass
Definition
Mass is a measure of the amount of matter an object contains.
Term

Weight

Definition
Weight is a measure of the force of gravity acting on an object .
Term
Volume
Definition
Volume is the amount of space an object takes up.
Term
Meniscus
Definition
Meniscus is a curve that determine the volume of water.
Term
Density
Definition
Density is a measure of how much mass is contained in a given volume.
Term
Estimate
Definition
An estimate is a approximation of a number based on reasonable assumtions
Term
Accuracy
Definition
Accuracy refers to how close a measurement is to the truth.
Term
Precision
Definition
Precision refers to how close a group of measurements are to each other.
Term
significant figures
Definition
Significant figures refers to the digits in a measurement.
Term
Percent Error
Definition
Percent error calculations are used to determine how close or how accurate the true value is.
Term
Mean
Definition
The mean or numerical average, is calculated by adding up all the numbers and then dividing.
Term
Median
Definition
The median is the middle number in a set of data.
Term
Mode
Definition
The mode is a number that appears most often in a list of numbers.
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