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Chapter Resources. 8. Click on one of the following icons to go to that resource. gpscience.com. Image Bank. Foldables. Video Clips and Animations. Chapter Summary. Chapter Review Questions. Standardized Test Practice. Chapter Resources. 5. gpscience.com. Image Bank. 8.
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Chapter Resources 8 Click on one of the following icons to go to that resource. gpscience.com Image Bank Foldables Video Clips and Animations Chapter Summary Chapter Review Questions Standardized Test Practice
Chapter Resources 5 gpscience.com
Image Bank 8 Click on individual thumbnail images to view larger versions.
Image Bank 8 Transfer Images • 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.
Image Bank 8 Magnetite
Image Bank 8 Magnetic Field
Image Bank 8 Horseshoe and Disk Magnets
Image Bank 8 Compass Needles on a Bar Magnet
Image Bank 8 Compass Needle Alignment
Image Bank 8 Magnetic Nail
Image Bank 8 Magnetic Domains
Image Bank 8 Broken Magnetic Poles
Image Bank 8 Magnetic Field Current in Wire
Image Bank 8 Magnetic Field Wire Loop
Image Bank 8 Magnetic Field Wire
Image Bank 8 Magnetic Iron Core
Image Bank 8 Speaker
Image Bank 8 Electromagnet
Image Bank 8 Galvanometer
Image Bank 8 Fan
Image Bank 8 Electric Motor
Image Bank 8 Turning Motor
Image Bank 8 Current Direction Change
Image Bank 8 Motor Forces
Image Bank 8 Concept Map-Left
Image Bank 8 Concept Map
Image Bank 8 Power Plant
Image Bank 8 Wind Farm
Image Bank 8 Alarm Clock
Image Bank 8 Power Lines
Image Bank 8 Transformer
Image Bank 8 Step Down Transformer
Image Bank 8 Creating Electricity
Foldables 8 Using Magnets Many devices you use contain magnets that help convert one form of energy to another. Make the following Foldable to help you understand how magnets are used to transform electrical and mechanical energy.
Foldables 8 Fold a sheet of paper in half lengthwise.
Foldables 8 Fold the paper down about 2 cm from the top.
Foldables 8 Open and draw lines along the top fold. Label as shown.
Foldables 8 Summarize As you read the chapter, summarize how magnets are used to convert electrical energy to mechanical energy in the left column, and how magnets are used to convert mechanical energy to electrical energy in the right column.
Video Clips and Animations 8 Click image to play movie To view the next video clip or animation click here.
Video Clips and Animations 8 Click image to play movie
Reviewing Main Ideas 8.1 Magnetism • A magnetic field surrounds a magnet and exerts a magnetic force. • All magnets have two poles: a south pole and a north pole. • Opposite poles of magnets attract; like poles repel. • Groups of atoms with aligned magnetic poles are called magnetic domains.
Reviewing Main Ideas 8.2 Electricity and Magnetism • An electric current flowing through a wire produces a magnetic field. • An electric current passing through a coil of wire can produce a magnetic field inside the coil. The coil becomes an electromagnet. One end of the coil is the north pole, and the other end is the south pole.
Reviewing Main Ideas 8.2 Electricity and Magnetism • The magnetic field around an electromagnet depends on the current and the number of coils. • An electric motor contains a rotating electromagnet that converts electrical energy to mechanical energy.
Reviewing Main Ideas 8.3 Producing Electric Current • By moving a magnet near a wire, you can create an electric current in the wire. This is called electromagnetic induction. • A generator produces electric current by rotating a coil of wire in a magnetic field.
Reviewing Main Ideas 8.3 Producing Electric Current • Direct current flows in one direction through a wire; alternating current reverses the direction of current flow in a regular pattern. • The number of turns of wire in the primary and secondary coils of a transformer determines whether it increases or decreases voltage.
Chapter Review 8 Question 1 What do magnetic field lines connect? A. magnetic domains B. north pole and south pole of a magnet C. north poles within a magnetic domain D. south poles within a magnetic domain
Chapter Review 8 Answer The answer is B. The magnetic field can be represented by lines of force, or magnetic field lines.
Chapter Review 8 Question 2 What two things are found on all magnets?
Chapter Review 8 Answer All magnets have two poles: a south pole and a north pole.
Chapter Review 8 Question 3 Which of these is a single wire wrapped into a cylindrical wire coil? A. domain B. pole C. solenoid D. turbine
