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Final Exam_Experimt Variables & Hypothesis - M

Last updated almost 3 years ago
9 questions

Pre_goal - I can tell the difference among the definitions of the dependent variable, independent variable, and the control variable.

Using the definitions below to answer questions #1-3.

Key Terms

-Scientific Hypothesis: A specific and testable prediction about the results of an experiment.

-Variable: An element, feature, or factor that can vary or change (i.e. ramp height, etc.)

-Dependent Variable: A variable whose value depends on another variable and is measured.

-Independent Variable: A value not dependent on another value but directly changed by an experimenter.

-Control Variable: A variable that is kept the same throughout an experiment.

*There can be many control variables but only one variable can be directly changed (independent)

and for simplicity one measured variable (dependent). All other variables must be controlled.

Required
1

Which definition describes a control variable.

Required
1

Which definition describes an independent variable.

Required
1

Which definition describes a dependent variable.

Goal - I can recognize a scientific hypothesis, Independent, Dependent, and Control variables given an experiment.

Required
1

Select all the things that can changed in this experiment below. Remember to select ALL that apply.
Experiment: A toy car is allowed to travel different chosen distances across a flat table. The travel times of each distance are recorded.

Required
1

Identify the independent variable in the experiment below.

Experiment: A toy car is allowed to travel different chosen distances across a flat table. The travel times of each distance are recorded.

Required
1

Identify the dependent variable in the experiment below.

Experiment: A toy car is allowed to travel different chosen distances across a flat table. The travel times of each distance are recorded.

Required
1

Identify a control variable in the experiment below.

Experiment: A toy car is allowed to travel different chosen distances across a flat table. The travel times of each distance are recorded.

Required
1

Identify a scientific hypothesis that can be tested by the situation below.

Experiment: A toy car is allowed to travel different chosen distances across a flat table. The travel times of each distance are recorded.

1

Extra Credit Question: Explain the difference between a control variable and the independent variable in a science experiment.