Vocab
Define the word attract.
To exert a pulling force.
Not all metals are magnetic. Name the metals that ARE magnetic.
Iron/Steel, Nickel, and Cobalt. INC!
Fill in the blank. Opposite poles _______.
Attract.
Fill in the blank. Like poles _______.
Repel.
What did our "bar magnet" experiment teach us? (2 concepts)
1). The magnetic field
2). The poles are the strongest part of the magnet
Define the word repel.
To exert a pushing force.
Name some metals that are not magnetic.
Copper, Aluminum, Zinc
How can magnets levitate?
By forcing like poles to face each other.
How do you transfer magnetism?
Rubbing a magnet against the metal object (made of iron/steel) many times in the same direction.
What did stacking our magnets on top of one another teach us?
You can increase the strength of magnets (only temporarily).
Define the magnetic field.
The space around a magnet.
Where are magnets the strongest?
At the two poles (north and south).
Who invented the compass?
Ancient Chinese.
What materials do you need to make an electromagnet?
Coil of wire, nail (iron object), battery.
What is currently happening with earths magnetic pole's teach?
The magnetic poles are moving
Define the word domain.
Microscopic areas of magnetism in iron, nickel, and cobalt that can be "lined up" to make an object a temporary magnet.
What part of the earth creates the magnetic field?
The solid inner core of iron.
How does a compass work?
Magnetic needle of the compass aligns with earth's magnetic field.
How do you "turn off" an electromagnet?
Break the circuit. (Open circuit).
How do you increase the strength of an electromagnet?
Increase the number of coils.
Increase current
Define an electromagnet.
A temporary magnet that is produced by running an electrical current through a coil of wire.
What is the name of the largest magnet you have ever touched?
Earth
Why do maglev trains work? (Bullet Trains)
Like poles face each other and repel.
What animals or insects did we learn about that uses magnetism to find direction and what could happen when earths poles flip?
-Birds (migrate)
-Honeybees (to do a dance to show other honeybees the direction in which they can find food)
***Answers will Vary***
What are some effects of earth's magnetic poles flipping
Answers will vary.