Earth's Geomagnetism Quiz

What is the purpose of a compass?

• To study the stars

• To measure temperature

• To find south, east, and west

• To predict the weather

What causes the magnetic needle inside a compass to rotate and point north?

• Gravitational pull

• Geomagnetic forces

• Wind currents

• Solar radiation

How do scientists model magnetic forces?

• Using magnetic field lines

• Using temperature gradients

• Using seismic waves

• Using ocean currents

What do compass needles point towards on Earth?

• The equator

• The prime meridian

• The magnetic north pole

• The magnetic south pole

What do field lines connecting opposite poles on magnets indicate?

• Repulsion

• Reflection

• Attraction

• Neutralization

How do compass needles behave when influenced by Earth's magnetic field?

• They stand still

• They point towards the equator

• They rotate until pointing north

• They move randomly

What do some animals use to naturally sense which way is north?

• Tiny compasses

• Magnetic field lines

• Bits of metal in their cells

• Solar radiation

What causes Earth's magnetic field?

• The solar wind

• The liquid iron core moving around

• The movement of the tectonic plates

• The rotation of the moon

What is the effect of Earth's magnetic field on objects?

• It causes them to spin in circles

• It has no effect on them

• It attracts them towards Earth

• It repels them away from Earth

What is the composition of Earth's core?

• Liquid outer core

• Gaseous core

• Molten lava core

• Solid iron core