Conducting Experiments Flashcards
What is a Scientific Experiment?
A procedure carried out to support or refute a Hypothesis.
Define Procedure?
A step-by-step list of how to carry out the experiment.
Define Constants?
All the variables that remain unchanged during an experiment.
Define Control?
A trial during which all the variables remain unchanged.
Define variable?
A factor that can alter your experiment’s results.
Steps of a Scientific Experiment? (OCPPCRR)
1 Observe something which you are curious about.
2 Construct a hypothesis.
3 Plan the experiment to test the hypothesis.
4 Predict outcome.
5 Conduct experiment.
6 Record the results.
7 Repeat previous experiments to see if you get the same results.
Explain the difference between a dependent and independent variable:
The independent variable is the variable you change during an experiment. The dependent variable is influenced by the independent variable, the results of your experiment.
Define Accurate?
How close a measured value is to a standard or known value.
Define Precise:
How close two or more measured values are to one another.
Name and define four types of Data Presentations.
Bar Graphs, presents data as bars of varying heights or lengths.
Line Graphs, shows the relationship between two variables.
Circle Graphs, presents data as slices of pie in a pie chart.
Table Graphs, presents data in rows and columns.
What type of graph is best for showing particular changes?
Bar Graphs are best for changes over a large period of time or groups of numbers. Circle Graphs are best for showing changes as part of a whole. Line Graphs are best for small changes in data.
Define Infer:
Using evidence from observations and facts to form an educated explanation.
