Magnetic Objects
True or False "Magnetism is an invisible force."
True
Repel means...
to push away
True or False: A bar made out of aluminum is magnetic.
False: Only certain materials, such as steel, nickel, cobalt, and iron are magnetic.
What is an electromagnet?
A magnet produced by the flow of electric current.
Compasses always point....
North
Attracts means...
to pull toward
Magnets have two poles, what are they called?
north and south
A magnet has what kind of force that is invisible?
magnetic force
invisible
The earth literally form a magnet by having what two poles.
a north and a south pole
Name one material that is magnetic.
nickel, steel, cobalt, iron
If a south pole and south pole or north pole and north pole came together, they would...
repel
False
The magnetic force is strongest at the poles.
Is there iron and other metals in the earth's core?
Name two materials that are magnetic.
nickel, steel, cobalt, iron
Is planet earth a magnet?
Absolutely!!
True or False: ALL the sections of magnet point in the same direction.
True
Lines of force begin near one of a magnet's poles and form what kind of pattern to the other pole?
An arched pattern
Name one advantage of having a compass
it helps give directions, it points north etc..
Name ALL four materials that we talked about that are magnetic and give me an example of each. (DAILY DOUBLE)
nickel: coins, belt buckles..
steel:nuts, bolts...
cobalt:buckles, zippers, some utensils...
iron: iron filings...
What is the teeny tiny particle that moves and creates magnetic force? Hint: You can only see this under a microscope.
Atoms
True or False: When you stroke an iron nail with a magnet, the nail gets its own north and south pole.
True
Can animals use the earth's magnetic pole to help with their life? If so, explain how one animal uses the earth as a magnet.
Answers with vary