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- 1. Multiple Choice_______ magnets have a North pole and a South pole.NoSomeAllBroken
- 2. Multiple ChoiceThe relationship between electricity and magnetism is calledelectrical energy.induced current.electromagnetism.ferromagnetism.
- 3. Multiple Choice
This is a picture of a simple electromagnet. How can the electromagnet be made stronger?Add more coils of wire to the nail.Use a smaller battery.Reverse the poles of the magnet.Remove all the coils and the nail. - 4. Multiple ChoiceSurrounding every magnet is a(n) __________ __________.magnetic fieldelectrical currentsmaller magnetfunny saying
- 5. Multiple ChoiceWhat kind of magnet can be turned on and off?a refrigerator magnetan electromagnetmagnetiteiron
- 6. Multiple ChoiceWhen two magnetic North poles are brought close to each other, they willattractrepelcreate sparkscancel each other out
- 7. Multiple ChoiceWhen two magnetic South poles are brought close to each other, they willattractrepelcreate sparkscancel each other out
- 8. Multiple ChoiceWhen a magnetic South pole is brought close to a magnetic North pole, the magnets willattractrepelcreate sparkscancel each other out
- 9. Multiple ChoiceWhen a magnet is able to move freely, its North pole willspin wildlypoint to the Earth's South polepoint to the Earth's geographic North polepoint to the Earth's magnetic North pole
- 10. Multiple ChoiceWhich of the following is NOT magnetic?zincironcobaltnickel
- 11. Multiple ChoiceWhen magnetic field lines are drawn, how do they look?straight linescriss-crossed lines like X'scurved lines from N to S pole and outwardslines extending outward in all directions like drawing the Sun
- 12. Multiple ChoiceWhat's the difference between a solenoid and an electromagnet?Solenoids do not use a power source.Electromagnets include a nail inside the coils.Solenoids include a nail inside the coils.Electromagnets do no use wire.
- 13. Multiple ChoiceWhich will make an electromagnet WEAKER?more coils of wire around nailan extra battery attachedthicker wireremove one of the nails from the coils
- 14. Multiple ChoiceIf two magnetic South poles are brought near each other, what would the magnetic field lines look like?the lines would connect between the polesthe lines would move out, but then curve away from each otherthe lines would curve like an "S"since South poles repel, there would not be any lines
- 15. Multiple ChoiceA magnet is attracted to a soup can because the can hasa South pole.a North pole.a magnetic field.iron in it.
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