PSLE Science: Magnets and the Stroking Method

What method did Davey use to try to magnetize rod Z?

• Stroking method

• Heating method

• Electric method

• Cooling method

Why might rod Z not have become a magnet?

• Rod Z was too long

• Rod Z was not a magnetic material

• The bar magnet was too strong

• The room was too cold

Does the bar magnet need to be the same size as rod Z for the stroking method to work?

• Yes, the bar magnet should be larger

• No, size does not matter

• Yes, they must be the same size

• No, the bar magnet should be smaller

What is crucial for the stroking method to successfully magnetize a rod?

• Using different poles alternately

• Using the same pole throughout

• Using a non-magnetic material

• Stroking in multiple directions

How many times should the rod be stroked for effective magnetization?

• 20 to 30 times

• 40 to 50 times

• 10 to 15 times

• 5 to 10 times