Here are a few questions about sky motions to give practice to students in first-year astronomy. Recall that the latitude of Edmonton is $53.5^{\circ}$.

1. If I observe a star at zenith in Edmonton at 4:00 a.m., what will its altitude be when it is observed to be transiting from Phoenix, Arizona which has latitude $33.5^{\circ}$ N?
   • $70^{\circ}$ above the northern horizon.
2. On September 21st (today), what is the highest altitude the Sun will reach in Edmonton?
   • $36.5^{\circ}$.
3. On February 21st, the Sun transits at zenith for observers at a latitude of $8^{\circ}$S. Would an observer at $80^{\circ}$N see the Sun above the horizon at any point?
   • Yes (briefly around noon)
4. (setting Evil to MAXIMUM) If a total lunar eclipse was observed from Edmonton on December 21st at midnight, what would its altitude be?
   • $60^{\circ}$ above the southern horizon.