1. kaleidoscope   navigational instrument for angular measurements.   ring (of leaves around the stem).   unit for measuring light energy.   tube with patterns from colored glass piece reflections.   Hint Half-n-half Clue   2. iota   sleeplessness.   green coating on old bronze.   observed fact or occurrence subject to scientific study.   very tiny quantity.   Half-n-half Clue   3. parasite   change or introduction of novelties.   sameness or consistency.   remainder or balance.   animal or plant living in or on another; sycophant.   Half-n-half Clue   4. torque   missile or shell.   quantity that can be defined or that can limit.   tendency to drive back or distaste.   twisting force producing rotation.   Half-n-half Clue   5. symmetry   marsh or soft and wet land.   combining elements to produce whole system.   sleeplessness.   pattern with balance or harmony.   Half-n-half Clue   6. isotope   tool with edgeless blade for mixing and spreading.   stitching of parts at their edges; thread or wire.   violent disturbance or agitation.   different form of an element.   Half-n-half Clue   7. slag   topmost point or summit.   vertebrate animal whose female suckles the young.   residue from smelting operation.   tool for pounding or grinding in a mortar.   Half-n-half Clue