Download Magnets Notes

Magnets Video Notes
Friday March 4, 2016
Draw a picture modelling the behavior of magnetic poles when they are brought together.
Like poles _______________
Unlike poles _______________
What happens when you break a magnet? Draw it after breaking the magnet in half twice.
Draw the magnetic field around a bar magnet?
What direction do the magnetic field “lines” ALWAYS travel?
How is the Earth’s magnetic field like a bar magnet?
How do the geographic poles of the Earth compare to the magnetic poles?
What happens when lightning strikes near a compass?
Why shouldn’t sailors place electric wires near their compass?
How are electrons moving in an atom?
How do these moving atoms produce ”small”
magnets?
What is a magnetic domain?
What about the magnetic domains determines whether a substance is magnetic or not?
Draw the magnetic domains for a substance that is NOT magnetic.
Draw the magnetic domain for a substance that is magnetic.
What is it called when a substance is naturally magnetic?
How can you force anon-magnetic substance to become magnetic?
Why is there a magnetic field around a current carrying wire?
Draw the magnetic field around the current carrying wire below.
What shape are the magnetic field “lines?
I
Describe the Right Hand Rule discussed in the video notes.
What is a solenoid?
Why is the magnetic field inside the loops of a solenoid very strong?
What is an electromagnet?
How make an electromagnet out of a solenoid?