1. mirage   size or extent.   time when sun is farthest from the equator.   twisting force producing rotation.   optical illusion due to atmospheric conditions.   Hint Half-n-half Clue   2. quadruped   substance that helps propel or push forward.   unit for measuring light energy.   stitching of parts at their edges; thread or wire.   animal with four feet.   Half-n-half Clue   3. nomenclature   pattern with balance or harmony.   terminology or method of naming.   substance that helps propel or push forward.   representation on a miniature scale.   Half-n-half Clue   4. propellant   different form of an element.   substance that helps propel or push forward.   animal with four feet.   optical illusion due to atmospheric conditions.   Half-n-half Clue   5. velocity   sameness or consistency.   bending of a ray of light due to change in density.   incompatibility or lack of uniformity.   speed or rate of motion.   Half-n-half Clue   6. insomnia   layer of earth's crust or society.   bending of a ray of light due to change in density.   sleeplessness.   slope or slanting plane.   Half-n-half Clue   7. transition   quantity that can be defined or that can limit.   passing from one state to another.   breathing.   outer boundary for closed figure.   Half-n-half Clue