Fall in love with science all over again!

Due to a decrease in the number of club members, the Physics, Chemistry, Biology, and Earth Science clubs were merged to form the "Grand Science Club.
The club members, who have different interests and specialties, begin their days filled with questions and exploration!

Q. How do you succeed in "blackboard eraser drop"?
Q. Nitrate can be used as an explosive. Is it true that it can be made from something close at hand?
Q. What shape is the longest flying paper airplane?

A science comedy full of miscellaneous knowledge by the author, a licensed science teacher!