One of the old issue of Popular Science magazine. have listed some of the interesting test answers from students collected by science and health teachers at various grade levels. • When you breath, you inspire. When you don't breath, you expire. • The pistol of a flower is its only protection against insects. • A fossil is an extinct animal. The older it is, the more extinct it is. • When you smell an odorless gas, it is probably carbon monoxide. • For head colds, use an agonizer to spray the nose until it drops into your throat. • The moon is a planet just like Earth, only deader. • Artificial insemination is what the farmer does to the cow instead of the bull. • Dew is formed on leaves when sun shines down on them and makes them perspire. • To collect fumes of sulfur, hold a deacon over a flame in a test tube. • Equator: A managerie lion running around Earth through Africa. • To remove dust from your eye, pull the eye down over the nose. • Momentum. What you give a person when th...