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Unit 1

Scientific Investigation

QuestionAnswer
observation using at least one of the five senses to gather information
inference A kind of conclusion you make based on your observations & experience
mass a measure of how much matter is in an object
volume a measure of how much space an object takes up
graduated cylinder a tool used to measure volume
triple beam balance a tool used to measure mass
data information collected during a scientific investigation
qualitative data data that take the form of description, pictures, video, etc.
quantitative data data that take the form of numbers and measurements
meniscus the curve at the top of a liquid when it is in a narrow container
Scientific Method A series of steps that scientists follow to answer and question or solve a problem
independent variable what the scientist changes in an experiment. The cause
dependent variable what the scientist measures or records as data from an experiment. The effect
control the group that does not receive the independent variable, that gets "normal" conditions. Used to compare with the treatment group.
validity the accuracy in the ability of an experiment to test a hypothesis
magnification when an object appears larger than it is
mean the average of a set of numbers
interval the space between numbers in a scale
experimental design the plan a scientist makes for an experiment
constants conditions that stay the same in an experiment
hypothesis an inference that answers a scientific question or solves a problem. Often comes in the form of If ______, then _______
What kind of information goes in the blanks? If _____________, then ___________. If the IV ..., then the DV will ...
The cause, the input independent variable
The effect, the output, the result, the data the dependent variable
question, research, hypothesis, experimental design, data collection, data analysis, conclusion, communication Some steps in the Scientific Method
The minimum number of trials necessary for a valid experiment 3 trials
The metric system is based on the number ____ 10
The metric system uses ________ form instead of fractions decimal
How many intervals are there between 1cm and 2cm on a metric ruler? 10 - each interval measures 1mm
What part of the meniscus should be used in taking measurements? the bottom of the meniscus
Created by: coradesj
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