CK-12 Physical Science Concepts - For Middle School

5.63. Transfer of Electric Charge http://www.ck12.org Polarization Assume that you have walked across a wool carpet in rubber-so ...

http://www.ck12.org Chapter 5. Energy FIGURE 5.149 Three ways electrons can be transferred are conduction, friction, and polari ...

5.63. Transfer of Electric Charge http://www.ck12.org Predict what will happen to the charges of a plastic comb and a piece of ...

http://www.ck12.org Chapter 5. Energy 5.64 Static Electricity and Static Discharge Describe static electricity. Explain static ...

5.64. Static Electricity and Static Discharge http://www.ck12.org Q:You’re more likely to get a shock in the winter when the air ...

http://www.ck12.org Chapter 5. Energy lightning strike at the end of the video. You’ll be amazed when you realize how much has o ...

5.65. Electric Current http://www.ck12.org 5.65 Electric Current Describe electric current. Explain why electric current occurs ...

http://www.ck12.org Chapter 5. Energy to push apart. If the charges actually move apart, their potential energy decreases. Elect ...

5.65. Electric Current http://www.ck12.org Explore More Watch the animation at the following URL, and then answer the questions ...

http://www.ck12.org Chapter 5. Energy 5.66 Direct and Alternating Current Distinguish between direct current and alternating cu ...

5.66. Direct and Alternating Current http://www.ck12.org Alternating Current When current keeps reversing direction, it is calle ...

http://www.ck12.org Chapter 5. Energy direct current (DC): Electric current that flows only in one direction. Explore More At ...

5.67. Chemical and Solar Cells http://www.ck12.org 5.67 Chemical and Solar Cells Explain how a chemical cell works. Outline how ...

http://www.ck12.org Chapter 5. Energy FIGURE 5.152 Solar Cells Solar cellsconvert the energy in sunlight to electrical energy. S ...

5.67. Chemical and Solar Cells http://www.ck12.org Summary Current requires a source of voltage, which is a difference in elect ...

http://www.ck12.org Chapter 5. Energy 5.68 Electric Resistance Define resistance and identify the SI unit for resistance. List ...

5.68. Electric Resistance http://www.ck12.org All materials have some resistance, but certain materials resist the flow of elec ...

http://www.ck12.org Chapter 5. Energy FIGURE 5.154 What’s wrong with this picture? (Hint: How does current get to the light bulb ...

5.69. Electric Conductors and Insulators http://www.ck12.org 5.69 Electric Conductors and Insulators Relate electric current to ...

http://www.ck12.org Chapter 5. Energy Electric Conductors Materials that have low resistance to electric current are calledelect ...