Magnetic Forces and Fields Quiz

What gives each atom a magnetic field or force field?

• Protons orbiting atomic nuclei

• Electrons orbiting atomic nuclei

Which type of magnet is created by flowing electricity?

• Electromagnets

• Ceramic magnets

What affects the strength of a permanent magnet?

• The color of the magnet

• The material type and size

What happens to temporary magnets after the magnetic field is removed?

• They become stronger

• They lose their magnetic alignment

How are magnetic fields visually represented?

• Using magnetic field lines with arrows

• Using color codes

Where is the magnetic field strongest in a magnet?

• At the center of the magnet

• Near the poles of the magnet

What are often used to map magnetic field lines around magnets, making invisible magnetic field lines visible to students?

• Iron fillings and compasses

• Plastic and wood

What are electromagnets made up of?

• A coil of wire with an electric current running through it

• A solid piece of iron

What factors affect the strength of an electromagnet?

• The current and the number of turns in the coil

• The color of the wire and the size of the battery

What can be inserted within the coil to increase the strength of the electromagnet?

• A core made of a magnetic material

• A piece of plastic