About This Chapter
Developing a Scientific Investigation - Chapter Summary
This chapter is designed to help you review terms and practices relating to scientific investigations. You'll study information about hypotheses, variables, research sources, accuracy, reliability and experimental design methods. After completing your study of this chapter, you should have developed or strengthened your ability to:
- Detail the steps involved in scientific investigations
- Explain how to develop a hypothesis
- Identify independent, dependent and control variables
- Describe how to design a scientific investigation
- Discuss the uses, benefits and drawbacks of online and printed scientific sources
- Relate how to assure the accuracy, reliability and validity of scientific sources
- Understand how to make measurements and calculations with precision and accuracy
- Note types of unavoidable experimental data error
The video lessons are accessible 24/7 on any device and only take about 5-10 minutes to review. You can print out the video transcripts to use as handy reference tools. Monitor your progress through this chapter on your Dashboard, and assure your understanding of the material by taking self-assessment quizzes for each lesson.
1. 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.
2. What is a Hypothesis? - Definition & Explanation
A hypothesis is an educated prediction that can be tested. You will discover the purpose of a hypothesis then learn how one is developed and written. Examples are provided to aid your understanding, and there is a quiz to test your knowledge.
3. Identifying & Interpreting Independent & Dependent Variables
Scientists answer questions by performing experiments that have an independent variable, a dependent variable and at least one control variable. By controlling, adjusting and measuring these variables, scientists find answers to their questions.
4. 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.
5. Print & Electronic Sources for Scientific Research
Sources provide you with helpful background information that support your own work. You can find sources both online and in printed materials. There are benefits and drawbacks to each, so you'll need to consider which is best for you and your project.
6. Scientific Sources: Accuracy, Reliability & Validity
It's important to use other sources to support your work, but what's even more important is to use the right ones. Sources should be valid, reliable, and accurate, but it's not always easy to tell which ones meet these criteria.
7. Identifying Sources of Unavoidable Experimental Error
Good data are essential for any experiment. But no matter how hard you try, error in your data is unavoidable. In this lesson, you'll learn about the types of unavoidable experimental error to be on the lookout for and how to reduce their occurrence in your data.
Earning College Credit
Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.
To learn more, visit our Earning Credit Page
Transferring credit to the school of your choice
Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.
Other chapters within the VCE Biology: Exam Prep & Study Guide course
- Ethical Considerations in Scientific Investigations
- Collecting Scientific Data
- Processing Experimental Results
- Communicating Scientific Ideas
- Cell Size, Structure & Function
- The Cell Membrane
- Stages of the Cell Cycle
- Cell Growth & Differentiation
- Energy Transformations in Living Things
- Functioning Systems of Living Things
- Adaptation & Regulation in Living Things
- Understanding Biodiversity
- Ecosystem Relationships & Populations
- Asexual & Sexual Reproduction
- Genomes, Genes & Alleles
- Chromosomes & Chromosome Disorders
- Genotypes & Phenotypes
- Pedigrees & Genetic Inheritence
- Cellular Membranes & Structures
- Nucleic Acids & Proteins
- Gene Structure & Regulation
- Understanding Enzymes
- Photosynthesis Overview
- Cellular Respiration Overview
- Cellular Signals
- Antigens & Immune Response
- Immunity & the Immune System
- Genetics & Populations
- Biodiversity Over Time
- Relatedness Between Species
- Human Evolution
- DNA Manipulation
- Biological Knowledge & Society
- VCE Biology Flashcards