Magnetic Fields

Front

What are Earth's magnetic poles?

Back

The points on the Earth's surface where the magnetic field points vertically downwards. They are not in the same location as the geographic poles.

Front

Do magnetic field lines ever cross?

Back

No, magnetic field lines never cross each other.

Front

Where are magnetic field lines closest together?

Back

At the magnetic poles.

Front

What is the shape of a magnetic field around a wire?

Back

The magnetic field around a wire is circular.

Tags

NGSS.HS-PS2-5

Front

Why does a compass needle point north?

Back

Because the North end of the compass lines up with the Earth's magnetic south pole.

Front

What is a magnetic field?

Back

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

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Front

What is the direction of magnetic field lines?

Back

Magnetic field lines emerge from the north pole and enter the south pole.

Front

What happens to magnetic field lines when they are closer together?

Back

The magnetic field is stronger when the lines are closer together.

Front

What is the role of a compass in navigation?

Back

A compass helps determine direction by aligning itself with the Earth's magnetic field.

Front

What is the difference between geographic north and magnetic north?

Back

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