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Chapter Resources. Click on one of the following icons to go to that resource. red.msscience.com. Image Bank. Foldables. Video Clips and Animations. Chapter Summary. Chapter Review Questions. Standardized Test Practice. red.msscience.com. Image Bank. - PowerPoint PPT Presentation
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red.msscience.com
Image Bank
Foldables
Video Clips and Animations
Standardized Test Practice
Chapter ResourcesChapter Resources
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Chapter Review Questions
Chapter Summary
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red.msscience.com
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To transfer images to your own power point follow the following steps:
• Open the “Resource” file from the CD-ROM disc – view the file in the “normal view” or “slide sorter view” mode - go to slide #2 – from there you can click through the images and follow these instructions. Click once on the image.
• Copy the image
• Go to your own power point document
• Paste the image.
Transfer Images
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Electric Charges
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The Force Between Charges
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Electric Field and Electric Forces
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Describing the Electric Field
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Charging by Induction
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Insulator
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Copper Electric Wire
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Electric Discharge
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Lightning Bolt
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Lightning Rod
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Electric Current
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A Simple Electric Circuit
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Electric Resistance
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A Model for Electron Flow
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Light Switch
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The Forces Between Magnetic Poles
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Magnetic Field
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Poles Pointing in Random Directions
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Poles Pointing in the Same Direction
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Electromagnets
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Magnetic Field
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Hydroelectric Plant
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FoldablesFoldables
Electric and Magnetic Forces
Make the following Foldable to help you understand the properties of electric forces and magnetic forces.
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FoldablesFoldables
Fold a sheet of paper in half lengthwise.
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FoldablesFoldables
Fold paper down about 2 cm from the top.
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FoldablesFoldables
Open and draw lines along the horizontal fold. Label as shown.
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FoldablesFoldables
As you read the chapter, summarize the properties of electric forces in the left column and properties of magnetic forces in the right column.
Summarize in a Table
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Video ClipsVideo Clips
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Video ClipsVideo Clips
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Video ClipsVideo Clips
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Video ClipsVideo Clips
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11Reviewing Main IdeasReviewing Main Ideas
• Positive and negative charges are surrounded by an electric field that exerts forces on the other charges.
Electric Charge and Forces
• Two positive or two negative charges repel each other; a positive and a negative charge attract each other.
• Charges can be transferred from one object to another. Charges in an object can be rearranged by an electric field.
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22Reviewing Main IdeasReviewing Main Ideas
• An electric current is the flow of electric charges. A current will flow continually in a closed path called an electric circuit.
Electric Current
• An electric field in a circuit causes charges to flow and transfer electrical energy.
• Resistance is a measure of how difficult it is for electrons to flow in a material.
• Voltage is a measure of the energy transferred by an electron as it flows in a circuit.
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33Reviewing Main IdeasReviewing Main Ideas
• A magnet has a north pole and a south pole and is surrounded by a magnetic field.
Magnetism
• Like magnetic poles repel each other and unlike poles attract each other.
• Some materials are magnetic because their atoms behave like magnets.
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Question 1
Chapter ReviewChapter Review
Like magnetic poles _______.
A. attractB. disintegrateC. evaporateD. repel
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Chapter ReviewChapter Review
Answer
The answer is D. Remember that opposites attract.
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Question 2
Chapter ReviewChapter Review
A magnetic domain is a region within an object in which the north and south poles of the atoms _______.
A. are not pointing in any directionB. are pointing at the North StarC. are pointing random directionsD. are pointing the same direction
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Chapter ReviewChapter Review
Answer
The answer is D; this is what defines a domain.
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Question 3
Chapter ReviewChapter Review
Answer
What surrounds an electric current?
A magnetic field surrounds an electric current. This is part of the relationship between magnetism and electricity.
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Question 4
Chapter ReviewChapter Review
Imagine a loop of current-carrying wire through which an iron core is passed. What will happen in the wire?
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Answer
Chapter ReviewChapter Review
Any magnetic field produced will become much stronger. The object is known as an electromagnet.
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Question 5
Chapter ReviewChapter Review
Answer
When current flows through the filament in a light bulb, electrical energy is converted to _______ and _______.
The answer is heat and light. As a result, the filament glows, and lights up the room.
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Standardized Test PracticeStandardized Test Practice
Question 1
The imbalance of electric charge on an object is called _______.
A. careful chargeB. static chargeC. temporal chargeD. Z-charge
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Standardized Test PracticeStandardized Test Practice
Answer
The answer is B. You can cause a static charge to build up on a balloon by rubbing it against your hair.
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Standardized Test PracticeStandardized Test Practice
Question 2
The rearrangement of electric charge due to the presence of an electric field is known as _______.
A. charging by deductionB. charging by inductionC. charging by reductionD. charging by suspension
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Standardized Test PracticeStandardized Test Practice
AnswerThe answer is B. When you charge by induction, the object still remains electricallyneutral. It just has more positive charge on one side than the other.
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Standardized Test PracticeStandardized Test Practice
Question 3
Gravity is always an attractive force, but electric charge _______.
A. can be an attractive or a repulsive forceB. is always a repulsive forceC. is neither an attractive nor a repulsive forceD. is non-existent
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Standardized Test PracticeStandardized Test Practice
Answer
The answer is A. Like charges repel, but unlike charges attract. As far as we know, there is no instance in which gravity can act as a repulsive force.
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Standardized Test PracticeStandardized Test Practice
Question 4
The atoms that make up some materials hold their electrons tightly, making it difficult to pass electric charge through them. Such materials are called _______.
A. conductorsB. insulatorsC. regulatorsD. salines
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Standardized Test PracticeStandardized Test Practice
Answer
The answer is B. A good example of an insulator is glass.
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Standardized Test PracticeStandardized Test Practice
Question 5
In a battery, electrons are caused to flow from _______.
A. the atmosphere to the negative terminalB. the battery to the groundC. the negative to the positive terminalD. the positive terminal to the air
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Standardized Test PracticeStandardized Test Practice
Answer
The answer is C; this is why a battery, in fact, needs two terminals.
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End of Chapter Resources File
