Magnetism Quiz for 9th Grade

When a magnet is freely suspended, it naturally aligns itself in which direction?

• East-West
• North-South
• Random orientation
• Vertical alignment

Which of the following materials is NOT a magnetic substance?

• Iron
• Cobalt
• Aluminum
• Nickel

What happens when two magnets with the same pole (N-N or S-S) are brought close together?

• They attract
• They repel
• They merge
• Nothing happens

If a magnet is broken into pieces, what happens to each piece?

• Loses magnetism
• Becomes non-magnetic
• Becomes a magnet with two poles
• Splits into individual atoms

Which type of material retains magnetism better?

• Soft iron
• Hard steel
• Copper
• Brass

In the electrical method of magnetization, what increases the strength of magnetization?

• Decreasing current
• Reducing wire coils
• Increasing current
• Using thinner wire

What is the primary characteristic of a magnetic field?

• Electrical conductivity
• Heat generation
• Detection of magnetic forces
• Sound transmission

When stroking a steel bar to magnetize it, in which direction should the magnet be moved?

• Random directions
• Back and forth
• One consistent direction
• Circular motion

Which material is typically used for electromagnets?

• Hard steel
• Soft iron
• Copper
• Aluminum

What happens to soft iron's magnetism when the magnetizing force is removed?

• Remains permanent
• Increases
• Quickly disappears
• Transforms