1. penumbra   change or introduction of novelties.   terminology or method of naming.   partly lighted shadow.   substance which provides nourishment.   Hint Half-n-half Clue   2. kaleidoscope   residue from smelting operation.   substance which provides nourishment.   smallest particle of a substance with all its properties.   tube with patterns from colored glass piece reflections.   Half-n-half Clue   3. inconsistency   partly lighted shadow.   target or goal.   tool with jaws for holding work.   incompatibility or lack of uniformity.   Half-n-half Clue   4. turbulence   change or introduction of novelties.   increase.   animal that nurses its young in a pouch.   violent disturbance or agitation.   Half-n-half Clue   5. magnitude   size or extent.   marsh or soft and wet land.   substance that helps propel or push forward.   discovery by accident.   Half-n-half Clue   6. serendipity   discovery by accident.   incompatibility or lack of uniformity.   harmless substance given as dummy medicine.   sameness or consistency.   Half-n-half Clue   7. microcosm   incompatibility or lack of uniformity.   representation on a miniature scale.   center of turbulence or whirling motion.   optical illusion due to atmospheric conditions.   Half-n-half Clue