Scientific Investigations Quiz

What is a hypothesis?

• A random guess without any evidence or reasoning.

• A conclusion based on limited data or personal opinion.

• A proposed explanation or prediction that can be tested through experimentation or observation.

• A statement that cannot be proven or disproven.

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NGSS.HS-PS1-3

What is the purpose of hypothesis testing in scientific investigations?

• To confirm the hypothesis without any evidence.

• To gather data for future investigations.

• To establish a new hypothesis based on existing evidence.

• To determine whether there is enough evidence to support or reject a hypothesis.

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NGSS.HS-PS2-5

What are the steps involved in experimental design?

• Formulate a hypothesis, Conduct the experiment and collect data, Analyze the data and draw conclusions, Communicate the results, Identify the problem/question, Design the experiment

• Identify the problem/question, Conduct the experiment and collect data, Analyze the data and draw conclusions, Communicate the results, Formulate a hypothesis, Design the experiment

• Design the experiment, Conduct the experiment and collect data, Analyze the data and draw conclusions, Communicate the results, Formulate a hypothesis, Identify the problem/question

• Identify the problem/question, Formulate a hypothesis, Design the experiment, Conduct the experiment and collect data, Analyze the data and draw conclusions, Communicate the results

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NGSS.HS-LS1-3

NGSS.HS-PS1-3

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Why is it important to have a control group in a controlled experiment?

• To confuse the participants and make the experiment more challenging.

• To increase the sample size and improve the statistical power.

• To save time and resources by skipping the control group.

• To provide a baseline for comparison and ensure valid results.

What are independent variables in an experiment?

• Variables that are measured in the experiment.

• Variables that are randomly assigned to groups.

• Variables that are controlled by the participants.

• Variables that are manipulated or changed by the researcher

Tags

NGSS.HS-PS1-3

What are dependent variables in an experiment?

• Variables that are manipulated by the researcher and are expected to change as a result of the dependent variable.

• Variables that are measured or observed and are expected to change as a result of manipulating the independent variable.

• Variables that are not measured or observed and are not expected to change as a result of manipulating the independent variable.

• Variables that are not affected by the independent variable and do not change in an experiment.

Tags

NGSS.HS-PS1-3

What is the role of data analysis in scientific investigations?

• Data analysis only helps in collecting data for scientific investigations.

• Data analysis helps in organizing, interpreting, and drawing meaningful conclusions from the collected data.

• Data analysis is not necessary for scientific investigations.

• Data analysis is only used for visualizing data in scientific investigations.

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NGSS.HS-ETS1-3

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What are the different types of variables in an experiment?

• independent variables, dependent variables, and controlled variables

• active variables, passive variables, and regulated variables.

• experimental variables, observational variables, and fixed variables.

• manipulated variables, responding variables, and constant variables.

What are the characteristics of a well-designed controlled experiment?

• Non-random assignment, experimental group, manipulation of independent variable, measurement of dependent variable, inclusion of confounding variables, and small sample size.

• Random assignment, control group, manipulation of dependent variable, measurement of independent variable, elimination of confounding variables, and sufficient sample size.

• Random assignment, control group, manipulation of independent variable, measurement of dependent variable, elimination of confounding variables, and sufficient sample size.

• Random assignment, experimental group, manipulation of independent variable, measurement of dependent variable, inclusion of confounding variables, and sufficient sample size.

Tags

NGSS.HS-PS1-3

Why is it important to repeat experiments in scientific investigations?

• To ensure reliability and validity of the results.

• To make the results more uncertain.

• To confuse the researchers.

• To waste time and resources.