The Earth's Magnetic Field

Q1. What are the Earth's field lines are similar to ?

Q2. Which point does the Earth rotate around?

Q3. What do we call the axis line for the geographical true north/south?

Q4. What do we call the axis line joining the magnetic north/south?

Q5. What do we call the angle beween the axis line for the geographical true north/south and the axis line joining the magnetic north/south?

Q6. What is thought to cause the Earth's magnetic field?

Q7. How do we know that the magnetic field of the Earth is not fixed?

Q8. How did early navigators use the magnet to find their way?

Q9. Why is the North Pole of a magnet called the North Pole?

Q10. Which end of a magnet will point to the South Pole of the Earth?