CK-12 Physical Science - For Middle School

23.3. Electric Circuits http://www.ck12.org FIGURE 23.19 A damaged electric cord is a serious haz- ard. How can it cause an elec ...

http://www.ck12.org Chapter 23. Electricity TABLE23.1:(continued) Electric Safety Feature Description GFCI Outlet GFCI stands fo ...

23.3. Electric Circuits http://www.ck12.org Lesson Review Questions Recall Identify the parts of an electric circuit. What is e ...

http://www.ck12.org Chapter 23. Electricity 23.4 Electronics Lesson Objectives Describe electronic signals. Identify types of e ...

23.4. Electronics http://www.ck12.org FIGURE 23.20 Digital and analog signals both change the voltage of an electric current, bu ...

http://www.ck12.org Chapter 23. Electricity FIGURE 23.21 Each silicon atom has four valence elec- trons it shares with other sil ...

23.4. Electronics http://www.ck12.org ROM (read-only memory) is a microchip that provides permanent storage. It stores importan ...

http://www.ck12.org Chapter 23. Electricity Apply Concepts Create an original binary code using the digits 0 and 1, and use it ...

23.5. References http://www.ck12.org 23.5 References Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0 Christopher Auyeung. C ...

http://www.ck12.org Chapter 24. Magnetism CHAPTER 24 Magnetism Chapter Outline 24.1 Magnets and Magnetism 24.2 EARTH AS AMAGNET ...

24.1. Magnets and Magnetism http://www.ck12.org 24.1 Magnets and Magnetism Lesson Objectives Identify properties of magnets. Ex ...

http://www.ck12.org Chapter 24. Magnetism FIGURE 24.1 Magnets cause this maglev train to speed along its track. Properties of Ma ...

24.1. Magnets and Magnetism http://www.ck12.org Magnetic Force The force that a magnet exerts on certain materials is calledmagn ...

http://www.ck12.org Chapter 24. Magnetism FIGURE 24.4 When it come to magnets, there is a force of attraction between opposite p ...

24.1. Magnets and Magnetism http://www.ck12.org be magnetized by placing it in a magnetic field. When this happens, all the magn ...

http://www.ck12.org Chapter 24. Magnetism Some materials are natural permanent magnets. The most magnetic material in nature is ...

24.1. Magnets and Magnetism http://www.ck12.org Apply Concepts Draw magnetic field lines around the bar two magnets pictured be ...

http://www.ck12.org Chapter 24. Magnetism 24.2 Earth as a Magnet Lesson Objectives Describe Earth as a magnet. State how Earth’ ...

24.2. Earth as a Magnet http://www.ck12.org Magnet Earth Imagine a huge bar magnet passing through Earth’s axis, as illustrated ...

http://www.ck12.org Chapter 24. Magnetism FIGURE 24.11 Earth’s magnetic north pole is close to the geographic north pole. http:/ ...