Agenda: Metric Units Metric Unit practice

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Agenda: Metric Units Metric Unit practice Day 7 8/19-8/20 Agenda: Metric Units Metric Unit practice

Bell Ringer Day 7 8/19-8/20 Tracy conducted an experiment to determine if the amount of salt in a body of water affects the number of plants that can live in the water. What is the independent variable? What is the dependent variable? What are two controlled variables?

Measurement Notes (entry 7) The metric system is an internationally agreed-upon set of units for expressing the amounts of various quantities such as length, mass, time and temperature. This is the SI system

Base Units Length= meter =m Volume= liter =L Mass= gram =g Time= seconds =s Temperature= Celsius =C

Prefix abbreviation meaning Kilo- k 1000 Hecto- h 100 Deka- da 10 BASE UNITS (m, L, g) 1 Deci- d 0.1 Centi- c 0.01 Milli- m 0.001

k h da UNITS d c m Examples:

Accuracy vs. Precision Accuracy: closeness to the actual measure (correctness) Precision: repeatability