Inversión Magnética ¿Fin del mundo?

The video explores the Earth's magnetic field, generated by the movement of liquid iron and nickel in the core, and its role in phenomena like the northern lights. It discusses the historical reversals of the magnetic field, which have occurred multiple times over millions of years, and the current weakening of the field. The potential effects of a weak magnetic field include increased radiation, communication disruptions, and possible species extinction, though past reversals were survived by Homo erectus. The video concludes with the uncertainty of predicting future reversals and their impacts.

What causes the Earth's magnetic field to act like a dynamo?

• The gravitational pull of the moon

• The heat from the Earth's mantle

• The rotation of the Earth's crust

• The movement of liquid iron and nickel in the outer core

How often has the Earth's magnetic field changed its orientation in the past?

• Once every 10,000 years

• One to five times every million years

• Every 100,000 years

• Once every 500,000 years

What is the current status of the Earth's magnetic field?

• It is strengthening

• It has already reversed

• It is weakening and may reverse

• It is stable and strong

What could be a consequence of a weakened magnetic field?

• Increased levels of radiation

• Immediate extinction of all species

• Complete disruption of the Earth's orbit

• Permanent loss of Earth's atmosphere

How long could the process of a magnetic field reversal take?

• A few days

• Several months

• More than 100 years

• A couple of years