Download magnetism notes

Name____________________________________________ Period___________ Date_____________________
Answer the questions after you do the activities and read the information on the web pages in bold from the
following link:
https://www.nde-ed.org/EducationResources/HighSchool/Magnetism/ferromagmaterials.htm
Ferromagnetic Materials:
1. What is happening in this experiment?
2. What conclusions can you draw about magnets and magnetism from this
experiment?
Electromagnets:
3. Describe what happens when the power is turned on in this activity.
4. How can turning on the electricity allow the iron crane to pick up the car?
5. Do you think electricity and magnetism are somehow related? Explain.
Electricity and Magnetism:
6. What happens to the compass needle as the compass moves around the wire
carrying electrical current?
7. Why do you think this happens?
More on Electricity and Magnetism:
8. What happens to the galvanometer needle when the magnetic lines of force
from the magnet interact with the electrical wire?
9. When the galvanometer needle moves to the right, what does it tell you is
happening in the wire?
10. Why does the galvanometer needle return to zero when the magnet stops
moving?
Magnetism and Direction of Current:
11. What happens each time you reverse the electrical current in the wire?
12. What would happen if we used alternating current (AC) instead of direct
current (DC) in the wire?
Electric Motor and Magnetism:
13. From what you have observed in this experiment here, can you explain how an
electric motor works?
14. Why is important that alternating current is supplied to our houses?