Earth's Magnetic Field and Properties

The Earth's magnetic field is generated by moving electrical charges, particularly in the liquid iron of the outer core. This field protects the planet from harmful solar wind particles, which can be observed in phenomena like the aurora borealis. The magnetic field is dynamic, with the magnetic north pole shifting over time. Understanding these changes is crucial for future studies.

What is responsible for creating Earth's magnetic field?

• Static magnetic forces

• Gravitational pull

• Stationary electrical charges

• Moving electrical charges

Why are most elements not magnetic?

• They have no magnetic core

• They lack electrons

• Their electrons are stationary

• Their electron spins cancel each other out

What makes materials like iron magnetic?

• They have a strong gravitational field

• Their electrons move freely and align

• Their electrons are stationary

• They are liquid at room temperature

What is the state of iron in Earth's outer core?

• Plasma

• Liquid

• Gas

• Solid

How does Earth's magnetic field protect us from solar wind?

• By cooling the Earth's surface

• By increasing atmospheric pressure

• By deflecting charged particles

• By absorbing the solar wind

What natural phenomenon is caused by Earth's magnetic field interacting with solar wind?

• Earthquakes

• Tornadoes

• Auroras

• Volcanic eruptions

Where do the charged particles in solar wind get deflected to?

• The stratosphere

• The Earth's core

• The poles

• The equator

How long is Earth's magnetic field expected to last?

• 91 thousand years

• 91 billion years

• 91 trillion years

• 91 million years

What is currently happening to the magnetic north pole?

• It is stationary

• It is moving across the Arctic Circle

• It is disappearing

• It is moving towards the equator

How long did the magnetic north pole stay in Antarctica around 42,000 years ago?

• 100 years

• 200 years

• 400 years

• 600 years