Controls and Variables

Controls and Variables

9th Grade

15 Qs

quiz-placeholder

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Controls and Variables

Controls and Variables

Assessment

Quiz

Science

9th Grade

Hard

Created by

Quizizz Content

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is a dependent variable in an experiment?

The variable that is manipulated by the researcher.

The variable that is measured or observed in an experiment, which is affected by changes in the independent variable.

The variable that remains constant throughout the experiment.

The variable that is used to compare against the experimental group.

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the relationship between independent and dependent variables?

The independent variable is the cause that is manipulated, while the dependent variable is the effect that is measured.

The independent variable is always larger than the dependent variable.

The dependent variable is the cause that is manipulated, while the independent variable is the effect that is measured.

Independent variables do not affect dependent variables at all.

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is an independent variable in an experiment?

The variable that is manipulated or changed in an experiment to observe its effect on the dependent variable.

The variable that remains constant throughout the experiment.

The variable that is measured in response to changes in the independent variable.

The variable that is not affected by any other variables in the experiment.

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

How can researchers ensure that their experiments are unbiased?

By using random sampling, blinding, and controlling for variables.

By conducting experiments in a controlled environment only.

By selecting participants based on their availability.

By using only qualitative data for analysis.

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the purpose of conducting experiments with multiple trials?

To ensure the reliability and accuracy of the results by minimizing the impact of random errors.

To make the experiment more complicated and difficult to analyze.

To reduce the time taken for the experiment to be completed.

To increase the number of variables being tested in the experiment.

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What are controls/constants in an experiment?

Factors that are kept the same throughout an experiment to ensure that the results are due to the independent variable.

Variables that are changed to observe their effect on the dependent variable.

Elements that are randomly assigned to different groups in an experiment.

Measurements taken at the end of an experiment to analyze the results.

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the significance of having a control group in an experiment?

A control group serves as a baseline to compare the effects of the independent variable, helping to validate the results.

A control group is used to manipulate the independent variable directly.

A control group is necessary to ensure that all variables are kept constant throughout the experiment.

A control group is only needed in experiments involving human subjects.

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