1. word, sentence, _______ , chapter   paragraph   index   line   book   Hint Half-n-half Clue   2. North Pole, Arctic Circle, _______ , Equator   Tropic of Cancer   Antarctic Circle   South Pole   Tropic of Capricorn   Half-n-half Clue   3. rocket, plane, _______ , bicycle   cart   spacecraft   tricycle   train   Half-n-half Clue   4. triangle, rectangle, pentagon, _______   hexagon   square   heptagon   octagon   Half-n-half Clue   5. day, _______ , month, year   decade   fortnight   hour   century   Half-n-half Clue   6. millimeter, _______ , decimeter, meter   decameter   centimeter   nanometer   kilometer   Half-n-half Clue   7. Earth, Jupiter, _______ , Pluto   Mars   Mercury   Uranus   Venus   Half-n-half Clue