Question 1

Which of the following best describes the scientific process?

Accepted Answer

A process of inquiry that includes repeatable observations and testable explanatory hypotheses.

Question 2

In a controlled experiment, which variable is manipulated by the experimenter?

Accepted Answer

Independent variable

Question 3

A researcher hypothesizes that a new herbal supplement reduces the chance of catching a cold by 80%. Which of the following would be the best way to evaluate this claim scientifically?

Accepted Answer

Conduct a controlled experiment with a placebo group and analyze the results statistically.

Question 4

Which of the following is a key difference between a scientific law and a scientific theory?

Accepted Answer

A law describes universal relationships, while a theory provides a well-accepted explanation for observations.

Question 5

Which of the following best illustrates the difference between correlation and causation?

Accepted Answer

Correlation does not prove causation; two variables may be related without one causing the other.

Question 6

A letter to a scientific journal complains about the inadequate sample size used in a published study. Why is this a valid concern in scientific research?

Accepted Answer

Small sample sizes can lead to unreliable or non-representative results.

Question 7

Which of the following is NOT a characteristic of good science?

Accepted Answer

Relying on a single, non-peer-reviewed source.

Question 8

What is the main purpose of a control group in a controlled experiment?

Accepted Answer

To serve as a baseline for comparison by not receiving the independent variable.

Question 9

Which reasoning process is used when forming a hypothesis from specific observations?

Accepted Answer

Inductive reasoning

Question 10

A scientist observes that 33% of the general population has attached earlobes. She predicts that this trait should be more common among students at her university. What is the next step in the scientific process?

Accepted Answer

Test the prediction by collecting and analyzing data from the student population.

Question 11

Which of the following best defines the term 'extraneous variable' in an experiment?

Accepted Answer

A variable not of interest that could affect the outcome if not controlled.

Question 12

Why is peer review important in scientific research?

Accepted Answer

It helps ensure the reliability and validity of scientific findings before publication.

Question 13

Which of the following is an example of deductive reasoning in science?

Accepted Answer

Testing a general theory by making specific predictions and conducting experiments.

Question 14

A study claims that people with attached earlobes are more intelligent. What is a critical question to ask when evaluating this research?

Accepted Answer

Was a controlled experiment used to test the hypothesis?

Question 15

Which of the following best describes a hypothesis in the scientific process?

Accepted Answer

A testable explanation for an observation or phenomenon.

Question 16

If a research finding is only published on a company website and not in a peer-reviewed journal, what is the most likely concern?

Accepted Answer

The research may not have undergone rigorous evaluation for reliability and validity.

Question 17

Which of the following Latin words is the root of 'science' and what does it mean?

Accepted Answer

Scientia, meaning 'to know'

Question 18

A study finds a strong correlation between ice cream sales and drowning incidents. What is the most scientifically sound interpretation?

Accepted Answer

There may be a third variable, such as temperature, influencing both ice cream sales and drowning incidents.

Question 19

Which of the following is a sign of bad science?

Accepted Answer

Dismissive of other work and self-authoritative claims.

Question 20

Which of the following best describes the relationship between theories, laws, and hypotheses in science?

Accepted Answer

Hypotheses are testable explanations, theories are well-supported explanations, and laws describe universal relationships.

Introduction to Science and the Scientific Process

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