Download e-book for iPad: Science Module N Electricity and Magnetism by Glencoe McGraw-Hill

By Glencoe McGraw-Hill

ISBN-10: 0078617731

ISBN-13: 9780078617737

Observe the flexibleness to educate technological know-how your way
Electricity and Magnetism, as part of the Glencoe technology 15-Book sequence, presents scholars with exact and accomplished insurance of electric power and magnetism. The powerful content material assurance integrates quite a lot of hands-on reports, critical-thinking possibilities, and real-world purposes. The modular process helps you to mix 'n match books to satisfy your curricula.

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These pieces are so small that they may contain a single magnetic domain. Scientists have shown that some animals use these natural magnets to detect Earth’s magnetic field. They appear to use Earth’s magnetic field, along with other clues like the position of the Sun or stars, to help them navigate. Earth’s Changing Magnetic Field Earth’s magnetic poles do not stay in one place. The magnetic pole in the north today, as shown in Figure 7, is in a different place from where it was 20 years ago. In fact, not only does the position of the magnetic poles move, but Earth’s magnetic field sometimes reverses direction.

Instead of using compasses, these animals and others have tiny pieces of magnetite in their bodies. These pieces are so small that they may contain a single magnetic domain. Scientists have shown that some animals use these natural magnets to detect Earth’s magnetic field. They appear to use Earth’s magnetic field, along with other clues like the position of the Sun or stars, to help them navigate. Earth’s Changing Magnetic Field Earth’s magnetic poles do not stay in one place. The magnetic pole in the north today, as shown in Figure 7, is in a different place from where it was 20 years ago.

Record your observations. Procedure 1. Connect one lightbulb to the battery in a complete circuit. After you’ve made the bulb light, disconnect the bulb from the battery to keep the battery from running down. This circuit will be the brightness tester. Conclude and Apply 1. Describe how the brightness of each bulb depends on the number of bulbs in the circuit. 2. Infer how the current in each bulb depends on the number of bulbs in the circuit. Compare your conclusions with those of other students in your class.

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Science Module N Electricity and Magnetism by Glencoe McGraw-Hill


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