1. The gravitational acceleration at the earth's surface is about _______ m/s2.   9.8   13.6   760   1   Hint Half-n-half Clue   2. A billion commonly refers to _______.   10000 million   100 million   1000 million   10 million   Half-n-half Clue   3. With which sport is Magic Johnson associated?   Baseball   Basketball   Rugby   Football   Half-n-half Clue   4. The density of water at room temperature is about _______ g/cm3.   100   1   1000   10   Half-n-half Clue   5. Bacon is smoked or salted meat from a _______.   pig   lamb   chicken   cow   Half-n-half Clue   6. The line of latitude about 66½o south of the equator is called the _______   Arctic Circle   Tropic of Capricorn   Tropic of Cancer   Antarctic Circle   Half-n-half Clue   7. With which sport is Mike Tyson associated?   Boxing   Basketball   Wrestling   Baseball   Half-n-half Clue