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scimethod/labsafety

QuestionAnswer
hypothesis possible answer for a ser of observations or answer to scientific question
questions scientists ask when did life first evolve on earth?
questions scientists ask why do mitochondria resemble some species or bacteria?
questions scientists ask how do sea tortoises navigate?
SCIENTIFIC INVESTIGATIONS biologists ask many questions to help them understand living systems
how to test hypothesis experiments
variables all factors that can change in an experiment
controlled experiment experiment in which only one variable is changed at at time
balance tool used to measure mass
graduated cylinder beaker marked in intervals that is used to measure volume
microscope tool used to produce magnified images of small objects
spring scale tool used to measure weight and force
thermometer tool used to measure temperature
test tube a cylindrical tube smaller than a beaker
graphs, charts, tables interpret, present, and organize data
manipulated variable purposely changed to test hypothesis
manipulated variable sometimes called independent variable
safety read entire lab procedure before experiment
safety only perform assigned experiment when given permission
safety know where all safety equipment is
safety wear closed toed shoes and goggles
safety never taste chemicals
safety always ask teacher if you don't understand something
safety dispose of all wastes and chemicals properly
safety wear cotton clothing
Created by: swimmorgan15
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