Year 10 Identifying Variables

The independent variable is:

• The variable you measure.

• The data you collect.

• Any variable that is controlled.

• The one variable that you change.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

The dependent variable is:

• The data or the variable you measure .

• The one variable that you change.

• The control group.

• Not measured in the control group.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

The control group is:

• All the variables that are kept the same in all the groups tested in an experiment.

• The group that is exposed to the independent variable.

• A single experiment set-up that doesn't have the independent variable and is used as a standard of comparison.

• The only group that is measured at the conclusion of the experiment.

Controlled variables are:

• Any variables that are kept constant (the same) throughout the experiment.

• Any variables that are changed throughout the experiment.

• Any variables that are measured throughout the experiment.

• Those variables only seen in the control group.

In an experiment, a variable is:

• Any factor that is changed by the experimenter.

• Any factor that can change.

• Always kept constant (the same).

• Any factor that is measured.

Tags

NGSS.MS-PS2-2

Extraneous variables are:

• Predicted variables that affect the outcome of the experiment.

• Unpredicted variables that affect the outcome of the experiment.

• Usually pretty harmless.

• Always a disaster for the experimenter.

In this experiment the independent variable would be:

• The egg.

• The volume of water.

• The amount of salt.

• The float level.

Tags

NGSS.MS-PS1-2

In this experiment the independent variable would be:

• The type of fertiliser.

• The potting mix used.

• The type of plant.

• The amount of water given per week.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

In this experiment the last pot plant would be called the:

• Experimental group.

• Independent variable.

• Dependent variable.

• Control group.

In this experiment, it would be true to say:

• Fertiliser 1 produced the most growth.

• The independent variable was the type of plant.

• The first pot plant was the control group.

• The dependent variable was the height of the plant.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4