What is the main theory that explains Earth's magnetic field?

• Coriolis Effect

• Dynamo Theory

• Plate Tectonics

• Gravitation Theory

Which layer of Earth is primarily responsible for generating the magnetic field?

• Inner Core

• Mantle

• Crust

• Outer Core

What causes the movement in Earth's outer core that leads to magnetism?

• Wind currents

• Rotation of Earth

• Convection currents of molten metals

• Gravity

What is the Coriolis Effect's role in Earth's magnetism?

• Generates magnetism directly

• Aligns convection currents to stabilize the magnetic field

• Causes tectonic plate movement

• Prevents solar radiation

Earth's magnetic poles are:

• Exactly aligned with the geographical poles

• Static and unchanging

• Slightly offset from the geographical poles

• Non-existent

What is a geomagnetic reversal?

• Earth's rotation stops

• A change in direction of Earth's magnetic poles

• Earth's magnetic field disappears

• Poles move toward the equator

Which area surrounding Earth protects it from solar wind and cosmic radiation?

• Stratosphere

• Magnetosphere

• Ozone layer

• Mesosphere

Which phenomenon allows the Earth to act like a giant magnet?

• Crustal composition

• Dynamo effect in the outer core

• Mantle convection

• Atmospheric pressure

What is magnetic declination?

• Angle difference between True North and Magnetic North

• Angle of the magnetic dip

• Strength of Earth's magnetic field

• Distance between magnetic poles

What instrument primarily uses Earth's magnetic field for navigation?

• Gyroscope

• Radar

• Magnetic Compass

• Sextant