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- 1. 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
- 2. Multiple ChoiceA north pole and a south pole will attract.TrueFalse
- 3. 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
- 4. Multiple ChoiceEarth's magnetic poles are in the same place as the geographic poles.TrueFalse
- 5. Multiple ChoiceMagnetic field lines are closet together at the __________.poleslines
- 6. Multiple ChoiceMagnets can interact without touching.TrueFalse
- 7. Multiple ChoiceMagnetic field lines always cross.TrueFalse
- 8. Multiple ChoiceThe motion of liquid _______ in the Earth's core creates a magnetic field.IronMagnesium
- 9. Multiple Choice
Are the magnetic field lines in the picture correct?
Yes, because they point from north to south.
No, because they point from north to south (they're supposed to go the other way).
Yes, because the North pole is on the left in all pictures.
No, because the North pole is on the left in all pictures (it's supposed to be on the right).
- 10. Multiple Choice
Looking at the field lines in this picture, these two magnets are ________
Attracting
Repelling
Attracting and Repelling
Doing nothing
- 11. Multiple Choice
What is the shape of a magnetic field around a wire?
- 12. Multiple Choice
What is the shape of a magnetic field around the Earth?
- 13. Multiple Choice
What is the shape of a magnetic field around a solenoid?
- 14. Multiple Choice
What is the shape of a magnetic field around a bar magnet?
- 15. 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
- 16. Multiple Choice
The area of magnetic force around a magnet is known as its _____________.
magnetic field
magnetic declination
magnetic fan lines
magnetic tan lines
- 17. 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
- 18. 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
- 19. 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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