Test on Introduction to Scientific Investigation Design

Introduction to Scientific Investigation Design for Students

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Question 1 of 50%

In a fair test, scientists aim to change multiple independent variables simultaneously to observe their combined effect on the dependent variable.

Test: Scientific Investigations

20 questions

Question 1: In a fair test, scientists aim to change multiple independent variables simultaneously to observe their combined effect on the dependent variable.

A. Yes

B. No

Explanation: To make an investigation a fair test, scientists usually change only one variable (the independent variable) and measure how it affects another variable (the dependent variable). Everything else that could affect the results should stay the same (control variables).

Question 2: Valid results are defined as being both repeatable and reproducible, and they also answer the original question.

A. Yes

B. No

Explanation: Valid results are both repeatable and reproducible AND they answer the original question.

Question 3: Control variables are the variables that are intentionally changed during a lab experiment to observe their effects.

A. Yes

B. No

Explanation: Control variables are defined as the variables that are kept the same to ensure a fair test, while the independent variable is the one that is intentionally changed.

Question 4: In a lab experiment designed as a fair test, scientists typically change multiple variables simultaneously to observe their combined effects.

A. Yes

B. No

Explanation: To make an investigation a fair test, scientists usually change only one variable (the independent variable) and measure its effect on another variable (the dependent variable). Everything else that could affect the results should stay the same (control variables) to ensure that only the changed variable is causing the observed results.

Question 5: If someone else conducts an experiment using a different method or piece of equipment and obtains similar results, the evidence is considered reproducible.

A. Yes

B. No

Explanation: The study materials state that 'Reproducible means that if someone else does the experiment, or a different method or piece of equipment is used, the results will still be similar.'