About This Chapter
How It Works:
- Identify the lessons in the Holt Science Spectrum - Physical Science chapter with which you need help.
- Find the corresponding video lessons with this companion course chapter.
- Watch fun videos that cover the introductory science topics you need to learn or review.
- Complete the quizzes to test your understanding.
- If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.
Students will learn:
- Differences between science and pseudoscience
- Experimental design
- Critical thinking skills
- The scientific method
- Metric units and how to convert them
- Textual graphics and visual graphics used to present data
- Interpreting graphs
- Scientific notation and significant figures
- Precision, accuracy and error in data evaluation
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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.
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.
3. What is Critical Thinking? - Definition, Skills & Meaning
Critical thinking is a term that we hear a lot, but many people don't really stop to think about what it means or how to use it. This lesson will tell you exactly what it means and make you realize that the average person largely ignores critical thinking.
4. 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.
5. How to Convert Units in the Metric System
If you can make dinner, you can convert units in the metric system. It's that easy! In this lesson, you'll learn about the three key things you'll need to perform conversions.
6. The Metric System: Units and Conversion
Just like you and your friend communicate using the same language, scientists all over the world need to use the same language when reporting the measurements they make. This language is called the metric system. In this lesson we will cover the metric units for length, mass, volume, density and temperature, and also discuss how to convert among them.
7. Using Visuals to Present Data: Textual Graphics vs. Visual Graphics
Textual and visual graphics can aid in visually presenting data to a business audience. You must first identify the type of data you will be presenting and then decide whether it is details, patterns or relationships being communicated.
8. Interpreting Graphical Representations
After watching this video lesson, you will be able to quickly and easily read and interpret any line and bar graph. You will be able to gather important information by just looking at one of these graphs.
9. Understanding Bar Graphs and Pie Charts
In this lesson, we will examine two of the most widely used types of graphs: bar graphs and pie charts. These two graphs can provide the reader with a comparison of the different data that is displayed.
10. 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.
11. Scientific Notation: Practice Problems
Scientific notation has a lot of exponents, but it's really not that bad - and it's really convenient for working with awkwardly big or small numbers! Get some practice here.
12. Evaluating Data: Precision, Accuracy & Error
The data you present as a scientist needs to be as accurate, precise and error-free as possible. In this lesson, we'll discuss what each of these terms means, as well as how error is introduced into measurements and other data collection.
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Other chapters within the Holt Science Spectrum - Physical Science: Online Textbook Help course
- Holt Physical Science Chapter 2: Matter
- Holt Physical Science Chapter 3: States of Matter & Energy
- Holt Physical Science Chapter 4: Atoms & the Periodic Table
- Holt Physical Science Chapter 5: The Structure of Matter
- Holt Physical Science Chapter 6: Chemical Reactions
- Holt Physical Science Chapter 7: Solutions
- Holt Physical Science Chapter 8: Acids, Bases & Salts
- Holt Physical Science Chapter 9: Nuclear Changes
- Holt Physical Science Chapter 10: Motion
- Holt Physical Science Chapter 11: Forces
- Holt Physical Science Chapter 12: Work & Energy
- Holt Physical Science Chapter 13: Heat & Temperature
- Holt Physical Science Chapter 14: Waves
- Holt Physical Science Chapter 15: Sound & Light
- Holt Physical Science Chapter 16: Electricity
- Holt Physical Science Chapter 17: Magnetism
- Holt Physical Science Chapter 18: Communication Technology
- Holt Physical Science Chapter 19: The Solar System
- Holt Physical Science Chapter 20: The Universe
- Holt Physical Science Chapter 21: Planet Earth
- Holt Physical Science Chapter 22: The Atmosphere
- Holt Physical Science Chapter 23: Using Natural Resources