Magnets

Magnets has 2 poles, called _____ and _____ poles.

• north 
• south 
• north and south
• east and west

A freely hanging magnet will point in the __________ direction. 

• north-south 
• south-north
• north-east
• south-east

Unlike poles of the magnets _______. Like poles _______ . 

• repel ... attract
• attract ... repel
• attract ... attract
• repel ... repel

Magnets attract ______________ materials. 

• magnetic 
• non-magnetic 
• metal
• wooden

Which one of the following materials below cannot be attracted by a magnet?

• iron 
• steel 
• copper 
• nickel

A stronger magnet can pull an iron nail to it from a ______ distance.

• nearer
• further

Which of the following ways can cause a magnet to lose magnetic strength?

• Stroking it many times
• Coiling more turns around the magnet 
• Heating it over a fire
• adding more batteries to a magnet

Which one of the following will make a stronger magnet through the "stroke" method?

• Use a longer magnet.
• Use a weaker magnet 
• Stroke in many directions
• Increase the number of strokes

Which one of the following would not make a stronger magnet through the electrical method?

• use more batteries
• coil a piece of wire around an iron object 
• increase the number of coils of wire around the magnetic object
• decrease the number of coils of wire around the magnetic object

Tags

NGSS.HS-PS2-5

How can you compare the strength of the two magnets?

• By the size of the magnet
• By the weight of the magnet
• By the type of magnetic material they attract
• By the weight of magnetic material they can attract