About This Chapter
Electricity & Magnetic Forces - Chapter Summary
In this chapter, you will watch entertaining video lessons about electricity and magnetic forces. Some of the subjects you will review include poles and dipoles of magnetic force, the definition of electrical power, repulsion and attraction of electric charge and force. You will also review these:
- Examples and qualities of insulators and conductors
- Definition and relationship between voltage in Ohm's law
- Examples of voltage sources
- Definition of a magnetic field and electromagnetic induction
Complete brief multiple-choice quizzes at the end of every lesson. Chapter and final exams are also available for you to take. Below each video, there are tags that can be used to jump from one topic to the another. Review the transcripts for a closer look at main vocabulary words and concepts.
1. Electric Charge and Force: Definition, Repulsion & Attraction
Have you ever wondered what electricity is and where it comes from? Have you ever been zapped by static electricity and wondered how it got there? We'll answer all of these questions in this lesson on electric charge and force!
2. Insulators and Conductors: Examples, Definitions & Qualities
In this lesson, we'll explore the reasons that some materials conduct electrical energy with ease while others block it almost completely. We'll also talk about the property of conductivity and some everyday examples of insulators and conductors.
3. Electrical Power: Definition & Types
Curious about the different types of electrical power? In this lesson, we'll define DC and AC power, provide a few examples, and provide a quiz to check your understanding.
4. Ohm's Law: Definition & Relationship Between Voltage, Current & Resistance
Did you know that electrical current is affected by the voltage and resistance in a circuit? In this lesson, we'll use Ohm's law, which tells us how current, voltage, and resistance are related, as we work through several electric circuit examples.
5. What is Electric Power?
Power is a word we use all the time, but do you really know what it means? We'll look at how electrical power relates to voltage, current and resistance and how knowing that relationship can help you in everyday life.
6. Voltage Sources: Energy Conversion and Examples
We use them every day, but no one really gives them much thought. What are we talking about? Why, voltage sources, of course! Batteries and generators are two of the most common sources of voltage that power our daily lives. We'll look at them in detail to see how they work.
7. Magnetic Force: Definition, Poles & Dipoles
You're probably familiar with magnets, but have you ever stopped to consider how they work? In this lesson, we'll look at the root of magnetism and some of the fundamental properties of magnets.
8. What is a Magnetic Field?
Magnetic fields fill the space around all magnets, but they're impossible to detect with our own senses. We'll use a common tool to map out a magnetic field and then discuss ferromagnetic materials to see how a magnetic field can be used to create new magnets.
9. Electromagnetic Induction: Definition & Variables that Affect Induction
We use electromagnetic induction every day, but do you have any idea what it is? In this lesson, we'll discuss this everyday phenomenon, the factors that affect its strength and its most common applications.
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Other chapters within the Pennsylvania Grades 4-8 - Science Subject Concentration (5159): Practice & Study Guide course
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- Structure of an Atom
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- Energy Production & Resource Use
- Science & Technology Used in Everyday Life
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- Mechanics in Physics
- Analyzing Motion & Forces
- Wave Characteristics & Phenomena
- Light, Sound & Waves
- Elements & The Periodic Table
- Chemical Bonding & Simple Chemical Compounds
- Interpreting Chemical Formulas
- Matter & Phase Changes
- Balancing & Using Chemical Equations
- Acid-Base Chemistry
- Understanding Solutions & Solubility
- Structure & Function of Cells & Organelles
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- Hierarchical Classification of Living Things
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- Animal & Human Anatomy & Physiology
- Basics of Ecology
- Earth's Surface Materials
- Earth's Internal Structure & Processes
- Geologic History
- Earth's Hydrosphere
- Earth's Bodies of Water
- Basics of Meteorology
- Earth's Climate & Seasons
- The Solar System & The Earth-Moon-Sun Relationship
- Galaxies & the Universe
- Space Exploration & Technology
- Pennsylvania Grades 4-8 - Science Subject Concentration Flashcards