Magnetic Field

True or False:  The Earth is a giant magnet

• True
• False

Which of these is magnetic?

• copper

• aluminium

• iron

• silver

Which of the following is true about a bar magnet?

• Its magnetic field is strongest near its center.
• It is surrounded by a magnetic field.
• The north pole is stronger than the south pole.
• The south pole is stronger than the north pole.

Earth acts like a giant magnet because its center is made up MOSTLY of

• granite
• limestone
• iron
• nickel

Magnetism is generated by moving

• protons.
• electrons.
• neutrons.
• elements.

As the distance between two magnets increases (they get farther apart), the force between them:

• Increases
• Decreases
• Stays the Same

If you cut a magnet in half, what happens to the poles?

• One half gets the North Pole, the other half gets the South Pole
• Both halves get only a North Pole
• Both halves get only a South Pole
• Both halves get a North pole and a South Pole

A _________________________ is the invisible force that surrounds a magnet.

• bar magnet

• a gravitational force

• a magnetic field

• gravity

What do the lines around this magnet represent?

• North Pole
• South Pole
• Magnetic Declination
• Magnetic Field

What are the poles of a magnet called?

• East and South

• South and North

• North

• I don't know