* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Guided Reading: Magnetism
Electromotive force wikipedia , lookup
Magnetosphere of Jupiter wikipedia , lookup
Van Allen radiation belt wikipedia , lookup
Maxwell's equations wikipedia , lookup
Friction-plate electromagnetic couplings wikipedia , lookup
Magnetosphere of Saturn wikipedia , lookup
Geomagnetic storm wikipedia , lookup
Electromagnetism wikipedia , lookup
Mathematical descriptions of the electromagnetic field wikipedia , lookup
Edward Sabine wikipedia , lookup
Lorentz force wikipedia , lookup
Magnetic stripe card wikipedia , lookup
Neutron magnetic moment wikipedia , lookup
Magnetic field wikipedia , lookup
Giant magnetoresistance wikipedia , lookup
Magnetic monopole wikipedia , lookup
Magnetometer wikipedia , lookup
Magnetic nanoparticles wikipedia , lookup
Electromagnetic field wikipedia , lookup
Earth's magnetic field wikipedia , lookup
Magnetotactic bacteria wikipedia , lookup
Magnetohydrodynamics wikipedia , lookup
Multiferroics wikipedia , lookup
Electromagnet wikipedia , lookup
Magnetoreception wikipedia , lookup
Magnetotellurics wikipedia , lookup
Superconducting magnet wikipedia , lookup
Geomagnetic reversal wikipedia , lookup
Magnetochemistry wikipedia , lookup
Force between magnets wikipedia , lookup
Name: Date: Guided Reading: Magnetism Period: Start on page 562, Ch. 36 “Magnetism;” answer the following questions as you read: 1. Two magnets will either or each other. 2. Rocks called in Greece. were found more than 2000 years ago in the region of 3. Which element is in lodestone that gives it its iron properties? 4. What did Hans Christian Oersted discover? 5. Magnets were found to exert forces on current-carrying wires which led to and . Continue on page 563, Ch. 36.1 “Magnetic Poles” answer the following questions as you read: 6. Magnets exert on each other and are similar to . 7. What are magnetic poles? 8. The “North” end of a magnet is really “ seeking.” really “ 9. poles repel; seeking” while the “ “ end of a magnet is poles attract. 10. How are magnetic poles different from electric charges? 11. If you break a bar magnet in half, each half . 12. Given the initial bar magnet at right, label the poles of the rest of the magnets. 13. Even atoms themselves are . Continue on page 564, Ch. 36.2 “Magnetic Fields” answer the following questions as you read: 14. Define Magnetic Field: 15. The shape of the magnetic field is revealed by 16. The direction of the field outside the magnet is from the to the . Where the lines are , the field strength is greater. The field is the strongest at the magnet’s . Continue on page 565, Ch. 36.3 “The nature of a Magnetic Field” answer the following questions as you read: 17. Every spinning is a tiny 18. A pair of electrons spinning in the pair of electrons spinning in would their magnetic fields would . direction makes up a magnet. A directions, however, work against one another and . 19. In which materials do the fields not cancel each other out? Continue on page 566, Ch. 36.4 “Magnetic Domains” answer the following questions as you read: 20. Define Magnetic Domains: 21. Refer to Figure 36.8, copy the caption below: 22. What is the difference between a piece of ordinary iron and an iron magnet? 23. When a magnet is brought near a magnetic material, the domains are . 24. Refer to the drawing in the upper portion of Figure 36.10. What is happening to the nails? Continue on page 574, Ch. 36.9 “Earth’s Magnetic Field” answer the following questions as you read: 25. Why does a compass point north? 26. Do compasses point to true north? What is this discrepancy called? 27. The Earth acts like a strong but it is not a magnetized chunk of iron. 28. How do most geologists think Earth creates its magnetic field? stable. Evidence of this comes from analysis of the 29. The magnetic field of the Earth magnetic properties of . Iron atoms in a state tend to align . When the iron , the direction themselves with Earth’s of Earth’s magnetic field is recorded by the orientation of the in the rock. 30. More than reversals have taken place in the past million years. The most recent years ago. We cannot predict when the next reversal will occur because occurred . Based on recent decreases of the Earth’s magnetic field in the reversal sequence is the last years we may well have a magnetic field reversal within years.