A coil of wire which produces a magnetic field when electricity flow through it.
What is an electromagnet?
100
List of the materials needed to make an electromagnet.
What is a D-cell, wires, coils, core, switch, and base?
100
The energy produced when a coiled wire is spun around a magnet.
What is electrical energy?
200
To push or force apart.
What is repel?
200
A complete circuit through which electricity flows.
What is a closed circuit?
200
A substance through which electricity will flow.
What is a conductor?
200
A list of the materials needed to make a telegraph.
What is an electromagnet, D-cell, key, metal bar, and base?
200
What happens when to the poles of a magnet when the magnet is broken.
What is each piece of the magnet will have a north and south pole?
300
A push or pull that makes something happen.
What is force?
300
An incomplete circuit through which electricity will not flow.
What is an open circuit?
300
A material that prevents the flow of electricity.
What is an insulator?
300
The largest magnet.
What is the earth?
300
Materials that are good conductors.
What are water and metal?
400
How permanent and electromagnets are the same.
What is they both attract to iron.
400
A device used to open and close circuits.
What is a switch?
400
Electromagnets in the real world.
Where is the junkyard, fire door or doorbell?
400
When positive and negative charges no longer balance.
What is static electricity?
400
Materials that are good insulators.
What are wood, rubber, and air?
500
How permanent and electromagnets are different.
What is electromagnets are made of many parts and permanent magnets are not? What is an electromagnet can be turned off and on and a permanent magnet is always on.?
500
Draw a closed circuit.
------- D-cell -----
l l
l l
l l
---------Motor-----
500
The places you would find a permanent magnet in the real world.
Where is the refrigerator door, cabinets, or games.
500
In a doorbell, electromagnets convert ___________ to ______________ to ________________.
What is electric energy, magnetic energy, mechanical energy?
500
What to do to increase the strength of an electomagnet.
What is add more power, increase the size of the core or increase the number of coils?