Experimental Design

What is a factor that is measured for change in an experiment?

• control

• constant

• independent variable

• dependent variable

What is the factor that an experimenter changes on purpose?

• Dependent Variable

• Independent Variable

• Constant

• Control

A summary of the experiment that includes whether hypothesis was right or wrong

• Hypothesis

• Question

• Conclusion

• Independent Variable

The part of the experiment that does not contain the independent variable. Used for comparison.

• Control Group

• Experimental Group

• Results

• Data

What is the effect of salt water on the average of the height of the 3 tallest blades of grass?
What is the independent variable in the above question?

• salt water

• height

• average

• effect

What is the part of the experiment that contains the independent variable?

• control group

• experimental group

• hypothesis

• dependent variable

The type of variable that you change or manipulate in an experiment.  It is what you are testing.

• Independent

• Dependent

• Control

The type of variable that responds to the experiment and is what you measure to determine if your hypothesis is true.

• Independent

• Dependent

• Control

If I water the plant more often, then it will grow taller.  Name the independent variable.

• The height of the plant

• The size of the pot

• The amount of water

• The amount of light.

If I water the plant more often, then it will grow taller.  Name the dependent variable.

• The amount of water.

• The amount of soil.

• The height of the plant.

• The amount of water.