Magnetism

What is the property of certain materials to attract iron, nickel, and cobalt called?

• Repulsion

• Gravitation

• Magnetism

• Electrostatics

What happens when like poles of two magnets are brought close together?

• They attract each other

• They repel each other

• Nothing happens

• They become neutral

Which of the following materials is most commonly used as the core of an electromagnet?

• Copper

• Aluminum

• Iron

• Silver

What is the magnetic material inside a compass needle?

• Iron

• Copper

• Gold

• Aluminum

What causes magnetism in materials?

• Proton

• Electron

• Neutron

• Photon

What happens when you break a magnet into two pieces?

• Both pieces lose their magnetism

• One piece becomes a north pole, and the other becomes a south pole

• The pieces become attracted to each other

• Nothing changes

Which type of magnetism is exhibited by materials like iron, cobalt, and nickel?

• Paramagnetism

• Diamagnetism

• Ferromagnetism

• Antiferromagnetism

What is the Earth's magnetic field primarily generated by?

• The rotation of the Earth's core

• The Moon's gravitational pull

• Human activities

• Solar radiation

Magnetic field lines always travel from the south pole to the north pole inside a magnet.

• True

• False

Magnetic field lines are continuous, forming closed loops that exit the south pole and enter the north pole of a magnet.

• True

• False