Final answer:
The statement about torc screws having a square indentation is false; they are actually Torx screws with a star-shaped pattern. Likewise, the claim about high-voltage wires being wrapped in an insulating material is false; they are held by insulating connectors but not wrapped.
Step-by-step explanation:
The statement that torc screws have a square indentation in their heads is false. Torc screws, more commonly referred to as Torx screws, are characterized by a six-pointed star-shaped pattern, not a square indentation. In contrast, screws with a square indentation are known as Robertson screws or square-drive screws. This is similar to the concept of a square peg fitting through the square hole and a round peg fitting through the round hole of a children's toy, where the correct driver must be matched with the appropriate screw head.
The statement about high-voltage wires being wrapped in an insulating material is false. The high-voltage transmission wires that are seen connected to tall metal-frame towers are indeed held aloft by insulating connectors to prevent electrical currents from traveling to the towers. However, the wires themselves are not wrapped in insulating material as it would be impractical due to the immense length of the wires and the fact that they are designed to function without additional insulation, utilizing only the air space around them as the insulating medium.