'Alone it's a horizontal front rudder for pitch control' value $800 answer the 49ers include J. Rice S. Young & this' value $1000 answer Calvin and Hobbes round Jeopardy! Show_number 4815 category SCIENCE & NATURE air_date 1990-04-10 question 'The name for mercury it also has the symbol of ancient Greek city in 1852 & called him.