Understanding Scientific Investigations

What is a factor, usually being measured or observed, that responds to, or depends on, another factor.

• Independent Variable

• Dependent Variable

• Controlled Variable

• Hypothesis

What are making multiple sets (trials) of measurements or observations in a scientific investigation.

• Repetition
• Replication

What is the variable manipulated by the experimenter in order to study changes in the outcome variable?

• Independent Variable
• Dependent Variable
• Controlled Variable
• Hypothesis

Tags

NGSS.MS-PS3-4

What is a statement that can be tested scientifically through experiments and/or other scientific investigations.

• Independent Variable
• Dependent Variable
• Controlled Variable
• Hypothesis

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NGSS.MS-PS2-2

We tested the effect of water temperature on how fast a sugar cube dissolves. What was the independent variable?

• Time to Dissolve
• Amount of Water
• Water Temperature
• Beaker Size

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

We tested the effect of water temperature on how fast a sugar cube dissolves. What was NOT a controlled variable?

• Size of Sugar Cube
• Temperature of Water
• Size of Beaker
• Amount of Water

Why did each group test the amount of drops of water a penny could hold before changing their variable?

• It provides more data to include in a lab report
• It ensures that the hypothesis will be correct
• It adds an independent variable to the experiment.
• It is the control and serves as the basis for comparison

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NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

How many variables should be changed in an experiment?

• ONE
• TWENTY
• THREE
• TEN

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NGSS.MS-PS2-2

Group 1 found food coloring affects the amount of drops a penny holds.  Group 2 found that food coloring does not.  What should they do?

• Ignore Group 2
• Conduct it again with quarters
• They should repeat the experiment again and compare results
• Conclude that food coloring has no effect

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NGSS.MS-ETS1-2

NGSS.MS-ETS1-4

What is empirical evidence?

• Evidence that comes from scientific testing.

• Evidence that you think but has never been tested.

Tags

NGSS.MS-PS1-2