Ch 2: NES General Science: Scientific Inquiry

About This Chapter

Watch video lessons and take practice quizzes on the scientific inquiry process. This chapter can help you review topics you'll need to know for the National Evaluations Series (NES) General Science exam.

NES General Science: Scientific Inquiry - Chapter Summary

This chapter on scientific inquiry is designed to help you study for the NES General Science exam. You'll cover the steps of scientific investigation, sampling techniques used in science experiments, dimensional analysis, scientific notation and more. When you're finished with the chapter, you should be able to:

  • Explain why controlled tests are important in scientific research
  • Use charts and graphs to organize data
  • Evaluate and present data from scientific investigation
  • Determine whether or not given evidence supports a conclusion
  • Take safety precautions and understand risks in science experiments
  • Use the appropriate tools for data collection and scientific tests
  • Solve for unknowns in scientific equations

Use the short video lessons to reacquaint yourself with topics you may not have studied in a while. Each lesson is less than ten minutes long and comes with a full written transcript. Test yourself with the practice quizzes, and contact our knowledgeable instructors if you have any questions.

13 Lessons in Chapter 2: NES General Science: Scientific Inquiry
Test your knowledge with a 30-question chapter practice test
The Nature of Science

1. The Nature of Science

This lesson will explore the basic nature of science. It will distinguish science from pseudoscience and hypothesis from theory and natural law; it will give plenty of examples of each.

What is Scientific Investigation? - Definition, Steps & Examples

2. What is Scientific Investigation? - Definition, Steps & Examples

Scientific investigation is the way in which scientists and researchers use a systematic approach to answer questions about the world around us. Read on to find out more. A quiz is provided to test your understanding.

Importance of Controlled Tests in Scientific Research

3. Importance of Controlled Tests in Scientific Research

One way to ensure that your experimental results are meaningful and relevant is to control for factors that may affect your experiment. In this lesson, we'll talk about how to do this and why it's so important in scientific research.

Sampling Techniques In Scientific Investigations

4. Sampling Techniques In Scientific Investigations

We can learn a lot by gathering information from a small subset of a larger group. By sampling this smaller group, scientists can save time and money while still gaining a good understanding of the population as a whole.

How to Organize Data with Charts & Graphs

5. How to Organize Data with Charts & Graphs

Research is only valuable if you can share the data effectively. In this lesson, we'll learn how to organize data and construct various charts and graphs to represent research data.

Evaluating Data from Scientific Investigation

6. Evaluating Data from Scientific Investigation

After watching this video, you will be able to explain the meaning of the terms 'accuracy' and 'reproducibility,' or precision, as they relate to science experiments. A short quiz will follow.

Presenting Data from Scientific Investigations

7. Presenting Data from Scientific Investigations

In this lesson we'll overview the best practices for presenting data from scientific investigations. We'll talk about how to select appropriate media, cite sources, and use symbols, equations, pictures, and graphs in your presentations.

Understanding Whether Given Evidence Supports a Conclusion

8. Understanding Whether Given Evidence Supports a Conclusion

Part of being a good scientist is evaluating other scientists' work. One aspect of this is knowing whether the evidence provided supports the scientists' conclusions. While this is not always easy, it is necessary in order to produce good science.

Understanding Risks & Taking Safety Precautions in Science Experiments

9. Understanding Risks & Taking Safety Precautions in Science Experiments

An important step in designing your experiment involves identifying and evaluating any potential safety risks. Knowing what these risks are ahead of time can help you avoid accidents and dangerous situations, which helps keep the experiment safe and fun for all.

Using Appropriate Tools for Scientific Tests & Data Collection

10. Using Appropriate Tools for Scientific Tests & Data Collection

A properly run experiment depends on using the right tools, both for data collection and analysis. In the end, it will save you time, money and frustration to spend some time planning out which tools are most appropriate for your work.

Unit Conversion and Dimensional Analysis

11. Unit Conversion and Dimensional Analysis

How is solving a chemistry problem like playing dominoes? Watch this lesson to find out how you can use your domino skills to solve almost any chemistry problem.

Significant Figures and Scientific Notation

12. Significant Figures and Scientific Notation

Are 7.5 grams and 7.50 grams the same? How do scientists represent very large and very small quantities? Find out the answers to these questions in this video.

Solve for Unknowns in Scientific Equations

13. Solve for Unknowns in Scientific Equations

Calculating a missing value in an equation is something you may come across in your scientific analyses. As long as you know the relationship between the variables in the equation, as well as the rest of the measured values, this is a relatively straightforward process for you to master.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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Other Chapters

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