Understanding Earth's Geomagnetism

Front

What is geomagnetism?

Back

The process that creates a planet-wide magnetic field.

Front

What is unusual about Earth's magnetic poles?

Back

They are reversed compared to geographic poles.

Front

What is the role of Earth's inner core in geomagnetism?

Back

It provides heat that causes the liquid iron in the outer core to move.

Front

Why do compass needles point north?

Back

Because they are attracted to Earth's magnetic south pole.

Front

What happens when opposite poles of two magnets are near each other?

Back

They attract each other.

Front

What is the Earth's magnetic field?

Back

A magnetic field that extends from the Earth's interior out into space.

Front

What causes the Earth's magnetic field?

Back

The movement of molten iron in the outer core.

Front

What is a magnetic pole?

Back

The regions of a magnet where the magnetic force is strongest.

Front

What is the difference between geographic and magnetic poles?

Back

Geographic poles are based on Earth's rotation, while magnetic poles are based on Earth's magnetic field.

Front

How do solar winds affect Earth's magnetic field?

Back

Solar winds can distort and compress the magnetic field, creating phenomena like auroras.