Electromagnets

Bob made an electromagnet but it was very weak.  How can he make it stronger?

• take away a d-cell
• wrap the wire loosely
• use thicker wire
• use less winds

Which rule explains why you would not use a brass rivet to make an electromagnet?

• opposites poles attract
• only iron and steel can become magnetized
• electricity flows from positive to negative
• metals conduct electricity

What component provides the pathway to carry electricity from component to component?

• d cell
• wire
• switch
• wire coil

You are making an electromagnet and can choose from a copper, iron or steel rivet.  Which sentence is true?

• You can use all of them because they are all made of metal
• You can use either iron or steel.
• You can only use the iron rivet.
• You can only use the copper rivet.

Tags

NGSS.MS-PS2-3

Which materials are magnetic?

• Wood

• Zinc

• Cobalt

• Aluminium

• All the Above

Tags

NGSS.MS-PS2-3

What materials are not magnetic?

• Wood

• Iron

• Plastic

• Nickel

Tags

NGSS.MS-PS2-3

What happen if you bring a north pole and a south pole together?

• The Repel

• They Attract

• The pull apart

• None of the Above

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Can anyone see the Magnetic fields?

• Yes

• No

Tags

NGSS.MS-PS2-5

Which direction does the magnetic field move towards?

• South to North

• North to South

• Left to Right

• Magnetic Fields to not move towards anywhere

The magnetic field is strongest at the poles, where the field lines are most concentrated?

• True

• False