Note that answering some of the questions below may require that the reader follow the links branching off the main body of the course.

1. If you consider angular velocity a directed quantity, i.e. a vector, what is the direction the angular velocity vector $Ω_E$ of the rotating Earth?

2. At an arbitrary point of the Earth’s surface, consider the three directions: North-South, East-West, and vertical. If you break up the angular velocity vector of the Earth, what is the size of the East-West component?

3. Which component of the angular velocity of the Earth is the deflection of motions in a horizontal plane proportional to?

4. In which direction does the draining water usually turn in household sinks at mid-latitudes on the Northern Hemosphere?

5. What might have determined the direction of rotation of water at the Equator in the video seen at the beginning of this course?

6. How long does it take for the plane of the Foucault-pendulum to turn around at the Equator?

7. Which component of the angular velocity of the Earth is proportional to the strength of the Eötvös-effect?

8. Where can you demonstrate no Eötvös-effect?