| Nature of Magnetism | Inside a magnet | Magnetic Earth | Electromagnets | How are electricity and magnetism related? |
| 10 | 10 | 10 | 10 | 10 |
| 20 | 20 | 20 | 20 | 20 |
| 30 | 30 | 30 | 30 | 30 |
| 40 | 40 | 40 | 40 | 40 |
| 50 | 50 | 50 | 50 | 50 |
| Final Question | ||||
The region in which magnetic forces act
The region in which magnetic forces act
magnetic field
An example of ferromagnetic material
An example of ferromagnetic material
Iron
Magnet has two ends, each one called____________
Magnet has two ends, each one called____________
a magnetic pole
A cluster of billions of atoms that all have magnetic fields that are lined up in the same way.
A cluster of billions of atoms that all have magnetic fields that are lined up in the same way.
Magnetic Domain
The type of magnetic mineral found in nature.
The type of magnetic mineral found in nature.
Magnetite. Another is a lodestone
The smallest particle of an element
The smallest particle of an element
atom
It is one of about 100 basic materials that make up all matter.
It is one of about 100 basic materials that make up all matter.
Element
The center of every atom is called__________
The center of every atom is called__________
Nucleus
Nuclear particles that carry a positive charge
Nuclear particles that carry a positive charge
protons
Tiny particles around the nucleus which carry a negative charge.
Tiny particles around the nucleus which carry a negative charge.
electrons
A device that has a magnetized needle that can spin freely.
A device that has a magnetized needle that can spin freely.
compass
What are the two magnetic poles of the Earth?
What are the two magnetic poles of the Earth?
North and South magnetic poles
Does the compass needle point to the same place?
Does the compass needle point to the same place?
Yes, to the magnetic north pole.
The region around the earth which acts like a magnet is called_____.
The region around the earth which acts like a magnet is called_____.
Magnet field
How is earth like a magnet?
How is earth like a magnet?
Earth has a magnetic field and has a north magnetic pole and a south magnetic pole.
A current-carrying coil of wire with many loops.
A current-carrying coil of wire with many loops.
solenoid
What is a solenoid with a ferromagnetic (made of iron) core?
What is a solenoid with a ferromagnetic (made of iron) core?
Electromagnet
What would happen if you increased the number of coils around a solenoid?
What would happen if you increased the number of coils around a solenoid?
The magnetic field of the solenoid would be strengthened.
Why an electromagnet a temporary magnet?
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.
How is an electromagnet different from a permanent magnet?
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.
A scientist who discovered that magnetism and electricity are related.
A scientist who discovered that magnetism and electricity are related.
Hans Christian Orsted
The relationship between electricity and magnetism is called___________
The relationship between electricity and magnetism is called___________
Electromagnetism
What happens to a compass needle when current flows through a wire?
What happens to a compass needle when current flows through a wire?
The compass needle will move.
What flows through the wire when it is attached to the battery?
What flows through the wire when it is attached to the battery?
electric current
How does a flowing electric current create a magnetic field?
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
Without changing the number of turns of wire, how could you change the strength of an electromagnet?
Without changing the number of turns of wire, how could you change the strength of an electromagnet?
You can change the size of the core or add a stronger battery.
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