Magnetic Force and Magnetic Field

What shape does a bar magnet resemble?

• A chocolate bar

• A circle

• A triangle

• A square

Why does an iron nail stick to a magnet?

• Because of magnetic force

• Because of air pressure

• Because of gravity

• Because of friction

Is contact necessary for a magnet to attract an iron nail?

• Yes, always

• Only if the nail is heavy

• No, never

• Only sometimes

What is the invisible area around a magnet called?

• Magnetic field

• Sound field

• Electric field

• Gravitational field

How does the strength of a magnetic field change with distance?

• It disappears completely

• It gets weaker as you move away

• It stays the same

• It gets stronger as you move away