260 likes | 443 Views
Magnetism Review Chapters 1 and 3. 2007 - 2008. 1. A naturally magnetic rock found at or near Earth's surface is called a. A. compass B. lodestone C. maglev D. needle. 2. Which of the following comparisons can you use to best explain voltage?. Fire in a fireplace
E N D
Magnetism Review Chapters 1 and 3 2007 - 2008
1. A naturally magnetic rock found at or near Earth's surface is called a • A. compass • B. lodestone • C. maglev • D. needle
2. Which of the following comparisons can you use to best explain voltage? • Fire in a fireplace • Lemon juice in a can • A compass needle • Water in a garden hose
3. What produces most of the electricity you use in your home and school? • A. generators • B. electromagnets • C. solar cells • D. electric cells
4. What would you use if you had to separate steel cans from aluminum cans? • transformer • B. generator • electromagnet • current detector
5. What is the pattern formed by iron filings sprinkled around a bar magnet called? • A. lodestone • B. lines of force • C. magnetic poles • D. magnetic field
6. Which of the following would best meet the clean- air standards set by the Air Quality Act ? A. power plants burning fossil fuels B. maglev trains C. railroad trains D. gasoline-powered cars
How is an electric current produced in a battery? • Chemical energy changes to electrical energy • Energy of motion changes into electrical energy • Electrical energy changes into chemical energy • Chemical energy changes into energy of motion.
8. Electricity sets up a magnetic field around ________________ • Electromagnets • Generators • Solar cells • Voltage
9. A compass needle points to Earth's magnetic south pole. A. True B. False
10. The north-seeking pole of a magnet is attracted to Earth's magnetic north pole. A. True B. False
11. A magnet's property of attracting materials such as iron and steel is called • A .gravity • B .electricity • C .magnetism • D .levitation
12. When you stroke a nail with a permanent magnet, you magnetize the nail. A. True B. False
13. When you move the north pole of one magnet close to the north pole of another magnet, the two poles move closer together. A. True B. False
14. A maglev train never touches the A. Poles B. Wires C. Rails D. Loadstone
15. Earth's magnetic north pole is at the same spot as Earth's geographic north pole. A. True B. False
16. The space in which the force of a magnet can act is called • A. compass • B. line of force • C. bar magnet • D. magnetic field
17. Like poles of two magnets attract each other. A. True B. False
The force that pushes electricity along wires is ___________________ A. Solar cells B. Voltage C. Electric cells D. Generators
19. Unlike poles of two magnets attract each other. A. True B. False
20. An object that attracts or pulls on certain materials- mainly iron and steel, is • A. compass • B. lodestone • C. magnet • D. pole
21. A battery is made up of two or more ________________ • Solar cells • Voltage • Generators • Electric cells
22. What is a magnetized needle that is allowed to swing freely? • A .a lodestone • B. a magnetic field • C .a temporary magnet • D .a compass
23. _______________ change the Sun’s energy into electrical energy. • Voltage • Electromagnets • Solar cells • generators
24. Earth is a giant magnet A. True B. False
B • D • A • C • B • B • A • A • B • A • C • A • B • C • B • D • B • B • A • C • D • D • C • A Answer Key