Magnetic Earth |
#1 |
A device that has a magnetized needle that can spin freely. |
compass |
#2 |
What are the two magnetic poles of the Earth? |
North and South magnetic poles |
#3 |
Does the compass needle point to the same place? |
Yes, to the magnetic north pole. |
#4 |
The region around the earth which acts like a magnet is called_____. |
Magnet field |
#5 |
How is earth like a magnet? |
Earth has a magnetic field and has a north magnetic pole and a south magnetic pole. |
Electromagnets |
#1 |
A current-carrying coil of wire with many loops. |
solenoid |
#2 |
What is a solenoid with a ferromagnetic (made of iron) core? |
Electromagnet |
#3 |
What would happen if you increased the number of coils around a solenoid? |
The magnetic field of the solenoid would be strengthened. |
#4 |
Why an electromagnet a temporary magnet? |
The temporary magnetic field of an electromagnet is produced by the current in the wire from the battery and the magnetized core. |
#5 |
How is an electromagnet different from a permanent magnet? |
Electromagnet can be turned on and off; its strength can be increased by adding loops of coil, using more current, or using a different core. |
How are electricity and magnetism related? |
#1 |
A scientist who discovered that magnetism and electricity are related. |
Hans Christian Orsted |
#2 |
The relationship between electricity and magnetism is called___________ |
Electromagnetism |
#3 |
What happens to a compass needle when current flows through a wire? |
The compass needle will move. |
#4 |
What flows through the wire when it is attached to the battery? |
electric current |
#5 |
How does a flowing electric current create a magnetic field? |
When electric charges(electrons and protons) flow through a wire, it moved thus causes magnetism/magnetic filed around the wire |