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- 1. Multiple ChoiceMagnetic field lines are closet together at the __________.poleslines
- 2. Multiple ChoiceEarth's magnetic poles are in the same place as the geographic poles.TrueFalse
- 3. Multiple ChoiceThe effects of a magnetic field can be observed using non-metal fillings.TrueFalse
- 4. Multiple ChoiceMagnets can interact without touching.TrueFalse
- 5. Multiple ChoiceMagnetic field lines always cross.TrueFalse
- 6. Multiple ChoiceA(n) __________ is a device that has a magnetized needle that can spin freely.CompassMagnetic Field
- 7. Multiple ChoiceWhat happens when two north poles of a magnet are placed together?they repelthey attractthey cancel each other outthe strength of the magnet is doubled
- 8. Multiple Choice
A ________ is a device that has a magnet on a needle that spins freely. It is used for navigation because its needle usually points north.
calculator
ruler
compass
map
- 9. Multiple ChoiceWhich picture has the most potential energy?Picture APicture B
- 10. Multiple ChoiceA north pole and a south pole will attract.TrueFalse
- 11. Multiple Choice
Looking at the field lines in this picture, these two magnets are ________
Attracting
Repelling
Attracting and Repelling
Doing nothing
- 12. Multiple Choice
What is the shape of a magnetic field around a wire?
- 13. Multiple Choice
What is the shape of a magnetic field around a solenoid?
- 14. Multiple ChoiceHow are electromagnets different from magnets?magnets can be turned on/offyou can turn an electromagnet on/offmagnets are more powerfulmagnets have a North and South pole
- 15. Multiple Choice
A coil of wire with a current is called a _______. The two ends of this act like the poles of a magnet. It is a weaker electromagnet.
compass
bar magnet
solenoid
circuit
- 16. Multiple Choice
What is a solenoid?
A coil of wire with current flowing through it
A type of bar magnet
A single straight wire
One loop of a wire
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