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Ch 9: Investigation & Experimentation in Physical Science

About This Chapter

Watch video lessons and learn about the steps involved in using the scientific method, including how to assess and evaluate the results. These easy-to-follow lessons are just a portion of our online study guide and video collection.

Investigation and Experimentation in Physical Science - Chapter Summary and Learning Objectives

In this lesson, you'll learn how the scientific method is used to construct and test an assumption or theory. At the beginning of the lesson, your instructor will take you through the different steps involved in the process and show you how scientists form a hypothesis or question, conduct an experiment and evaluate the results to see if the hypothesis has been confirmed or disproved. You'll also learn how scientists document their conclusions so that their peers can replicate and review their findings.

An important part of the chapter will cover the use of charts and graphs in scientific research, and you'll even find out how to create one of your own! Your instructor will also explain the difference between linear and nonlinear information on a graph, and discuss the practical use of mathematical and scientific formulas. When you've finished reviewing the videos and taking the online tests, you should be able to:

  • Understand how to conduct a formal scientific investigation
  • Evaluate the results of a scientific test for reliability and reproducibility
  • Construct and interpret scientific graphs
  • Use basic mathematical principles to solve science problems

VideoObjective
The Scientific Method: Steps, Terms and ExamplesUsing appropriate terms, outline the steps used in the scientific method. Provide examples.
Experimental Design in Science: Definition and MethodDefine and outline the procedures used in experimental design.
Evaluating Data from a Scientific InvestigationDetermine the accuracy and reproducibility of data.
Variables and Controls in a Scientific InvestigationDifferentiate between variable and controlled parameters in a test.
How to Read Scientific Graphs and ChartsExplain how to interpret scientific graphs and charts.
How to Construct Graphs from Data Construct graphs from data, and develop quantitative statements that describe the relationship between variables.
Linear and Nonlinear Relationships in Data Distinguish between linear and nonlinear relationships on a graph of data.
Applying Mathematical Relationships in Science When giving the two remaining terms, use simple mathematical relationships to determine a missing quantity (including speed, density, force, and volume formulas).

9 Lessons in Chapter 9: Investigation & Experimentation in Physical Science
Test your knowledge with a 30-question chapter practice test
The Scientific Method: Steps, Terms & Examples

1. The Scientific Method: Steps, Terms & Examples

The scientific method is more than just hypotheses and experiments. In this lesson, we'll explore the themes and variations that make up the world of science.

Experimental Design in Science: Definition & Method

2. Experimental Design in Science: Definition & Method

What are the requirements of a scientific experiment? How do scientists turn hypotheses into theories and laws? Learn the answers to these questions and more in this lesson on the design of scientific experiments.

Evaluating Data from Scientific Investigation

3. 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.

Variables & Controls in a Science Experiment

4. Variables & Controls in a Science Experiment

After watching this video, you will be able to explain how science experiments are conducted; what variables, controlled variables, and controls are: and why these things are important. A short quiz will follow.

Measures of Central Tendency: Definitions & Practice

5. Measures of Central Tendency: Definitions & Practice

After watching this video, you will be able to explain the meaning of the terms central tendency, mode, mean and median. You will also be able to calculate these three values from provided data. A short quiz will follow.

How to Read Scientific Graphs & Charts

6. How to Read Scientific Graphs & Charts

How do scientists summarize their findings with visual aids? In this lesson, explore the different types of tables, charts and graphs that scientists use. Learn to read these effectively as a preview to your science studies.

How to Construct Graphs from Data & Interpret Them

7. How to Construct Graphs from Data & Interpret Them

After watching this video, you should be able to explain what a graph is, construct a scatter plot, and interpret scatter plots from scientific data. A short quiz will follow.

Linear & Nonlinear Relationships in Data Graphs

8. Linear & Nonlinear Relationships in Data Graphs

After watching this video, you will be able to explain the difference between linear and nonlinear relationships when plotting graphs. A short quiz will follow.

Solve for Unknowns in Scientific Equations

9. 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.
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