Magnetic Forces WRA

What are magnets primarily composed of, according to the passage?

• Copper and aluminum

• Iron and steel

• Nickel and cobalt

• Silicon and carbon

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

• They attract each other.

• They repel each other.

• They create a magnetic field.

• They become stronger magnets.

What principle explains the behavior of magnets attracting or repelling each other?

• Newton's Laws of Motion

• Coulomb's Law

• Ohm's Law

• Magnetic polarity

What role do electromagnets play in modern technology, according to the passage?

• They create permanent magnetic fields.

• They use electricity to produce temporary magnetic fields.

• They shield against magnetic fields.

• They amplify gravitational forces.

What natural phenomenon is influenced by the Earth's magnetic field, as mentioned in the passage?

• The migration of birds

• The growth of plants

• The rotation of the Earth

• The evaporation of water