Earth's Magnetic Field Quiz

What is the primary purpose of Earth's magnetic field in protecting our planet?

• It creates the Northern Lights

• It protects Earth from harmful solar particles

• It helps plants grow better

• It controls ocean currents

Where is Earth's magnetic field strongest?

• At the equator

• In the atmosphere

• At the poles

• In the core only

What makes Earth act like a giant magnet?

• The solid rock in Earth's crust

• The movement of charged particles in the outer core

• The presence of aluminum deposits

• The rotation of the atmosphere

Why don't compass needles point exactly to geographic north?

• Compasses are often poorly made

• Earth's rotation affects the needle

• The magnetic north and geographic north poles are in different locations

• Magnetic fields are too weak to be accurate

What discovery helped scientists understand why Earth acts like a magnet?

• The invention of the compass

• The study of earthquake waves using seismographs

• The discovery of the Northern Lights

• The invention of GPS systems

What makes up Earth's outer core?

• Solid rock and minerals

• Water and ice

• Liquid iron and nickel

• Magnetic crystals

How do garden warblers navigate during migration?

• They follow other birds

• They use structures in their eyes to see magnetic fields

• They memorize landmarks

• They follow ocean currents

What happens when you hang a bar magnet from a string?

• It spins randomly

• It points east to west

• It aligns in a north-south direction

• It remains still

Why is Earth's magnetic north pole called 'north' when it's actually a magnetic south pole?

• Scientists made a mistake

• To avoid confusion with geographic north

• Because it's stronger than the south pole

• It changed over time

How does a basic compass work?

• It uses satellite signals

• It uses a magnetized needle floating in water or on a pin

• It relies on solar power

• It uses electronic sensors