Amplify Magnetic Fields 1.4, 1.5, and 1.6

Front

What is the direction of the magnetic force in repelling magnets?

Back

The force comes out of the positive north pole and goes into the negative south pole of itself.

Front

Why does a compass always point north?

Back

The positive north side of the compass magnet is attracted to the magnetic south pole.

Front

Why do compasses work at all?

Back

The Earth is a magnet with a molten iron core which creates a magnetic field around the Earth.

Front

What creates a magnetic field in the Earth's core?

Back

The motion of liquid iron.

Front

Is the magnetic north pole located at the geographic south pole?

Back

True.

Front

What is the definition of a magnetic field?

Back

A magnetic field is a region around a magnetic material or a moving electric charge within which the force of magnetism acts.

Front

What is the role of the Earth's molten iron core in magnetism?

Back

The motion of molten iron in the Earth's outer core generates electric currents, which in turn produce the Earth's magnetic field.

Front

What happens to a compass in the presence of a magnetic field?

Back

A compass aligns itself with the magnetic field, with its north pole pointing towards the magnetic south pole.

Front

What is the difference between geographic north and magnetic north?

Back

Geographic north refers to the direction along the Earth's surface towards the North Pole, while magnetic north refers to the direction a compass points, which is towards the magnetic north pole.

Front

How does the Earth's magnetic field protect us?

Back

The Earth's magnetic field deflects solar wind and cosmic radiation, protecting the atmosphere and life on Earth.