Sophia made an electromagnet but it was very weak. How can she make it stronger?
  • take away the battery
  • wrap the wire loosely
  • use less copper wire
  • coiled more copper wire
What component becomes a temporary magnet when electricity is flowing through the circuit?
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  • iron nail
  • copper wire
  • battery
  • switch
What component provides the pathway to carry electricity from component to component?
sc-5 sb-5-Electromagnet Summaryimg_no 20.jpg
  • battery
  • wire
  • switch
  • iron nail
Which component provides the energy or the power source to run the electromagnet?
  • Iron nail
  • wire
  • Switch
  • Battery
Princess made an electromagnet with one battery and wrapped a copper wire 30 times while Megan made and electromagnet with one battery and wrapped a copper wire 50 times. Which electromagnet is stronger?
  • Megan
  • Princess
What is an electromagnet?
  • a permanent magnet with a north and south pole
  • a temporary magnet made from current carrying wire around a magnetic metal core
This is a picture of a simple electromagnet. How can the electromagnet be made stronger?
sc-5 sb-5-Electromagnet Summaryimg_no 21.jpg
  • Remove all the coils and the nail.
  • Use a smaller battery.
  • Reverse the poles of the magnet.
  • Add more coils of wire to the nail.
Which of the following is NOT part of an electromagnet?
  • Toothpick
  • battery
  • Iron nail
  • wire
How are electromagnets different from magnets?
sc-5 sb-5-Electromagnet Summaryimg_no 22.jpg
  • magnets have a North and South pole
  • you can turn an electromagnet on/off
  • magnets are more powerful
Surrounding every magnet is a __________ __________.
sc-5 sb-5-Electromagnet Summaryimg_no 23.jpg
  • another magnet
  • electrical current
  • magnetic field
What would increase the strength of an electromagnet?
  • Changing the direction of the current
  • Increased the amount of electricity that flows through the wire.
  • Inserting a wooden core inside the coil
  • Decreasing the number of coils of wire
You can make an electromagnet stronger by: having a __________________core inside the wire.
sc-5 sb-5-Electromagnet Summaryimg_no 24.jpg
  • smaller core
  • larger core
  • greener core
  • water core
What is a permanent magnet?
sc-5 sb-5-Electromagnet Summaryimg_no 25.jpg
  • Can be turned off
  • Can not be turned off
  • Can turned on and off
Why do you think the compass needle is moving when is near to electromagnet?
sc-5 sb-5-Electromagnet Summaryimg_no 26.jpg
  • Because of the magnetic field generated in the wire.
  • Because of the electricity generated in the compass.
What are the components of the electromagnet?
  • copper wire, iron nail, and a wooden stick
  • copper wire, iron nail
  • copper wire, iron nail, and a battery
  • Copper wire, paper and a battery
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