Magnetism Vocabulary

At the end of this session, the student should be able to: Describe the effects of magnetism in terms of attraction & repulsion.

• Magnetism causes objects to attract or repel each other.

• Magnetism only causes objects to attract each other.

• Magnetism only causes objects to repel each other.

• Magnetism has no effect on objects.

At the end of this session, the student should be able to: Identify the difference between magnetic flux and flux density.

• Magnetic flux is a measure of the quantity of magnetism, taking into account the strength and the extent of a magnetic field, while flux density is the amount of flux per unit area perpendicular to the magnetic field.

• Magnetic flux is the amount of flux per unit area perpendicular to the magnetic field, while flux density is a measure of the quantity of magnetism, taking into account the strength and the extent of a magnetic field.

• Magnetic flux and flux density are the same and can be used interchangeably.

• Magnetic flux is only related to electric fields, while flux density is related to magnetic fields.

At the end of this session, the student should be able to: State how magnetic field is produced and the force on a current carrying conductor in a magnetic field.

• Magnetic fields are produced by electric currents, and the force on a current-carrying conductor in a magnetic field is given by the right-hand rule.

• Magnetic fields are produced by static charges, and the force on a current-carrying conductor in a magnetic field is zero.

• Magnetic fields are produced by electric currents, and the force on a current-carrying conductor in a magnetic field is always attractive.

• Magnetic fields are produced by moving charges, and the force on a current-carrying conductor in a magnetic field is given by the left-hand rule.

What is a magnet?

• A piece of iron that attracts other pieces of iron and points North and South when suspended.

• A piece of wood that attracts other pieces of wood.

• A piece of plastic that attracts other pieces of plastic.

• A piece of iron that repels other pieces of iron.

The earliest recorded magnets were lumps of iron ore, known as '________', found on the shores of Magnesia.

• lodestone

• magnetite

• hematite

• pyrite

What are materials that are attracted by a magnet called?

• Non-magnetic materials

• Magnetic materials

• Insulators

• Conductors

Fill in the blank: A magnet is any device that produces an external ________ field.

• magnetic

• electric

• gravitational

• nuclear

Which of the following is a type of modern permanent magnet?

• A) Compass needle

• B) Paper clip

• C) Plastic rod

• D) Wooden block

What is the process called when a piece of soft iron becomes slightly magnetized by being placed near one end of a magnet?

• Conduction

• Induction

• Reduction

• Reflection

Stroking soft iron with a magnet affects its magnetization by:

• aligning the domains in the iron

• increasing the temperature of the iron

• decreasing the weight of the iron

• changing the color of the iron