Exploring the Foundations of Science

What is the first step in the scientific method?

• Formulating a hypothesis

• Conducting an experiment

• Making an observation

• Analyzing data

Which unit is not part of the International System of Units (SI) for measuring length?

• Meter

• Kilometer

• Inch

• Centimeter

What does it mean if repeated measurements are close to each other but not necessarily close to the true value?

• The measurements are accurate

• The measurements are precise

• The measurements are neither accurate nor precise

• The measurements are both accurate and precise

Which of the following is an example of a number written in scientific notation?

• 0.00056

• 5.6 x 10^4

• 5600

• 5.6 x 10^-4

What is the correct sequence of steps in the scientific method?

• Observation, Hypothesis, Experiment, Conclusion

• Hypothesis, Observation, Experiment, Analysis

• Observation, Experiment, Hypothesis, Conclusion

• Hypothesis, Experiment, Observation, Conclusion

Which of the following is not a base unit in the metric system?

• Gram

• Liter

• Second

• Pound

What is the term for the closeness of a measurement to the true value?

• Precision

• Accuracy

• Reliability

• Validity

In the metric system, what is the base unit for mass?

• Liter

• Gram

• Meter

• Newton

Which of the following is a correct representation of 0.000000123 in scientific notation?

• 1.23 x 10^8

• 123 x 10^-9

• 1.23 x 10^-7

• 12.3 x 10^-8

What is the purpose of a control group in an experiment?

• To confirm the hypothesis

• To provide a standard for comparison

• To increase the sample size

• To manipulate the independent variable