Electromagnetism

The ability of some materials to attract certain metals is called

• Electricity
• Magnetism
• Electromagnetism
• Atoms

Tags

NGSS.MS-PS2-3

Choose the best option to complete this gap:
A magnetic field is the ________ around a magnet in which the magnetic force acts.

• pole
• electron
• space
• iron

When you put the poles of two magnets together they will either attract or repel each other.  Which of these sentence is correct?

• If the two poles are the same the magnets repel each other.
• If the two poles are the same the magnets attract each other.
• If the two poles are different the magnets repel each other.

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.

What happens when we rub a needle on a magnet several times?

• The needle breaks
• The needle becomes a magnet.
• We get a compass.
• The needle floats.

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.

Which components do you need to build an electromagnet?

• a wire, a conductor, a battery and some paper clips.
• a wire, a compass, a battery and some paper clips.
• wool, a conductor, a battery and some paper clips.

When did the needle of the galvanometer move in Faradays experiment?

• When he pushed the magnet into the center of the coil.
• When he pushed the coil into the center of the magnet.
• When he switched the lights on.

Look at the picture
What makes the light bulb light up?

• The movement of the magnets.
• A battery.
• The movement of the bobin between the magnets.

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.

Tags

NGSS.MS-PS1-1