# Ch 1: Intro to Physics

### About This Chapter

## Intro to Physics - Chapter Summary

This convenient online chapter explores the fundamentals of physics. As you progress through this series of entertaining and simple lessons, you'll become familiar with the different branches of physics as well as physics history. You'll also get practice using the metric system, significant figures and other math-related physics concepts. The chapter includes interactive self-assessment quizzes to help you solidify your understanding of these basic physics topics. If you need any extra help, feel free to reach out to our expert instructors. The chapter is available to study at any time, and you can use any computer or mobile device to access the material. Completing this chapter can help you:

- Summarize the history of physics and identify the different branches of the field
- Understand the applications of trigonometry and algebra in physics
- Describe derived units and the SI base
- Differentiate between basic metric system units
- Perform dimensional analysis and unit conversion
- Recognize significant figures and scientific notation
- Solve problems that involve the metric system, scientific notation and significant figures
- Explain direct and linear relationships

### 1. What is Physics? - Definition, History & Branches

Known as the fundamental science, physics creates a foundation for other natural sciences. In this lesson, you'll be introduced to the field of physics, learning about its history and its modern branches of study.

### 2. Math Review for Physics: Algebra

There's quite a lot of algebra you need to know to do physics. Here we'll review some of the concepts needed for rearranging equations, working with polynomials, and working with exponents.

### 3. Elements of the SI: Base & Derived Units

Discover what we mean by SI units. Then explore SI units further by learning about all the base units, and several examples of the derived units that make up the system.

### 4. 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.

### 5. 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.

### 6. 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.

### 7. Practice with the Metric System, Significant Figures & Scientific Notation

This lesson will introduce the reader to the metric system, significant figures, and scientific notation. Additionally, we will use those three components as a way to do metric system conversions.

### 8. Linear & Direct Relationships

Learn how to tell when you're dealing with linear and direct relationships and what graphs of these relationships should look like. Then, go further and explore how to interpret the slopes of these graphs.

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### Other Chapters

Other chapters within the Physics 101: Intro to Physics course

- Overview of Vectors
- Overview of Kinematics
- Overview of Forces
- Overview of Gravity
- Basics of Newton's First Law
- Basics of Newton's Second Law
- Basics of Newton's Third Law
- Energy and Work in Physics
- Overview of Linear Momentum in Physics
- Basics of Rotational Motion
- Waves in Physics
- Sound & Light in Physics
- Basics of Optics
- Fluid Dynamics in Physics
- Basics of Thermodynamics in Physics
- Overview of Electrostatics
- Overview of Magnetism
- Basics of Nuclear Physics
- Studying for Physics 101