Do Now Tuesday 3/11

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.
• Use a smaller battery.
• Reverse the poles of the magnet.
• Remove all the coils and the nail.

Tags

NGSS.MS-PS2-3

What is an electromagnet?

• a temporary magnet made from current carrying wire around a magnetic metal core.
• a permanent magnet with a north and south pole

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NGSS.MS-PS2-3

How are electromagnets different from magnets?

• magnets can be turned on/off
• you can turn an electromagnet on/off
• magnets are more powerful
• magnets have a North and South pole

Tags

NGSS.MS-PS2-3

Surrounding every magnet is a __________  __________.

• magnetic field
• electrical current
• another magnet

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

While electric current is flowing through a wire, what surrounds the wire?

• a magnetic field
• a glowing light
• neutrons
• protons

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What would increase the strength of an electromagnet?

• Increasing the amount of current flowing through the wire.
• Inserting a wooden core inside the coil
• Changing the direction of the current
• Decreasing the number of coils of wire

Tags

NGSS.MS-PS2-3

What can iron filings be used to show?

• Gravitational field

• Magnetic field lines

• Electric field

• All of the above

The strongest part of a magnet is at its...

• poles

• ends

• sides

• Magnetic North

What metal has magnetic properties?

• cobalt

• nickel

• iron

• All of the above