Magnetism ST

A compass needle responds to a magnetic field, because the compass needle is a

• A. generator.
• B. motor.   
• C. magnet.
• D. transformer.

The needle of a compass points towards the north because...

• the Earth's magnetic south pole is situated near the Geographic North Pole.
• there is a battery inside the compass.
• The Earth attracts the south pole of the needle.
• There is a mass of iron inside the compass.

Hans Christian Oersted observed that if we put a compass near to an electric current...

• it points to the West.
• we intensify the electric current.
• the needle moves.

What is an atom made of?

• Three different types of particles: electrons, protons and neutrons.
• Three different types of particles: electrons, protons and nanotrons.
• Three different types of particles: electrons, molecules and oxygen.

Where is the force of attraction the strongest on a magnet?

• at the poles
• in the middle
• above the magnet
• below the magnet

While electric current is flowing through a wire, what surrounds the wire?

• a magnetic field
• a glowing light
• neutrons
• protons

A magnet cannot not move which of the following objects?

• a paper clip
• a nail
• a toothpick
• a staple

This large crane magnet functions only when the electrical current is ON.  The crane magnet is an example of what type of magnet?

• NIB Magnet
• Ceramic Magnet
• Electromagnet
• funnel magnet

The force of magnetism is stronger when magnets are ________________

• cold
• round
• closer together
• farther apart

What type of magnet is this?

• a bar magnet

• a "U" magnet

• a horseshoe magnet

• a stick magnet