1. How many men have walked on the moon?

2. What is the name given to the invasion of warm surface waters off the Peruvian coast that has been identified with strange climactic effects in recent years? 

3. Occasionally, a bad cold will cause a decrease in a persons hearing ability. What is the name of the tube that becomes blocked to cause this problem? 

4. Name the medical term given to the inflammation of infection of the mucous membranes of the nose.  

5. where would a car traveling on a roller coaster have the most potential energy?